Ha, well now that I've actually gotten off my ass and read it, now I can say "well, maybe I'm like Laurel Hills and am watching some version of the movie that no one else knows about" 
And I can really only go off my (limited) memory, but here we go.
- Rey starts the movie alone, but I didn't really get the sense that she was struggling. She had food, she had shelter, and she was a very capable scavenger. When BB-8 shows up, she confidently brushes off the raider that has come for the droid, and he runs away. She's clearly a known/respected entity, and he's afraid of her. We know she can fight, this is fine.
- When she goes to sell the parts, the pawn shop owner does take advantage of her. But from my memory, she doesn't seem devastated or hopeless about it. It'd just mean she'd have to go back to the destroyed Star Destroyer and find more stuff. Or just sell BB-8, which would've made her relatively rich from the context. When people are sent to kill her, she fights them off with such efficiency that Finn is impressed. Then she starts chasing him. He runs away, terrified. This could be the Force, but being able to handle herself, training or not, is fine.
- Escaping in the Falcon. She did run into some stuff when they first took off, but she mastered it really quickly from what I remember. For someone who'd "never flown anything like that before" - she did a really good job. Now I have no idea what experience she had flying something, but if you threw me in a cockpit, there's probably a better chance that the plane catches fire than it getting an inch off the ground. If it's a matter of my Air Force buddy moving from his cargo plane to a 747, then that's forgivable. But that shot of the Falcon maneuvering was in the first trailers - people all assumed it was Han flying it. It wasn't clunky, and she out-maneuvered First Order pilots in much more maneuverable ships. If that's the Force, that's fine.
- The mess with the mercenaries. I agree, this part was dumb. But in the stretch between leaving the planet and the speeches with Han about the Force, Rey says "hey, let me try this" or some variation a bunch of times. And in every situation, it works like a charm. Whether it was releasing the monsters to save Han from the gangs or killing the monsters, everything Rey "tried" worked immediately. If that's the Force, that's fine.
- On the Maz planet, the Force clearly guides Rey to the lightsaber. That's definitely the Force, and that's fine. And, yeah, she's overwhelmed by the visions and runs out into the wilderness. This is the first time she's actually seems out of control in the movie (spoiler alert, it's also the last). She's panting, she's out of breath, she's terrified, and she's easily captured by Kylo.
- On the ship, Kylo *attempts* to "mind-rape" her but fails spectacularly. After the torture sequence, it's Kylo who runs off, overwhelmed and terrified. He's a Sith Lord, and she/her latent training/the Force protects her completely. Poe got mind-raped. In the clips I was able to find, Rey looks confident and powerful. Not struggling at all. If that's the Force, that's fine.
- The Jedi Mind Trick - Again, I'd like to think, based on the previous six movies, that the Jedi Mind Trick is not Jedi 101. It's used only a handful of times in the six movies, and it fails as often as it works. But if we want to credit it to latent training or the Force itself, that's fine. I just wish there'd been a scene earlier in the movie where she was able to convince the Pawn Shop owner to give her the extra credits or something. It felt out of left field.
- Her rescue. Leia was a badass in her own right, but she still had to be rescued. When Rey is rescued, she's just out walking around. She got no resistance getting out of her cell after that *one* guard walked away. From the looks of things, there were only about 8 people on board the Starkiller at the time (Kylo, Hux, Phasma, Rey, Han, Chewie, that one stormtrooper, and maybe another). It's played off as a sort of coincidence, but if that's the Force, that's fine.
- The lightsaber battle - Yes, Kylo was conflicted. Yes, he'd just killed his father. Yes, he was shot with the bowcaster (which killed tons of people throughout the movie and Ren just sorta shrugged it off). I get that. But Kylo is obviously trying to kill both Rey and Finn. I took special care to pay attention to that the second time I watched it - he's out for blood. If the injury is bothering him, the fight doesn't really show it. He still acts like he's able to physically do everything that he wants to do. He just can't kill either of them. He beats Finn, but there's no reason that fight should've lasted as long as it did (imagine Han picking up a lightsaber and fighting Vader in Empire. Or, heck, just remember the one time Vader and Han fought in the entire Original Trilogy https://www.youtube.com/watch?v=uHH6YVHGh90 ). But then Rey basically kicks his butt.
- The ending. Okay, so I get that Leia is force-sensitive and Rey is force-sensitive. That's fine. But Leia walks *right by* Chewbacca. She doesn't say anything to him. She doesn't even acknowledge him. This is Han's wife and Han's best friend. Chewie and Leia go back decades. And she walks by him to hug a stranger that knew Han for, what, a few hours? Honestly, how long did they even know each other? They meet on the Falcon, they have three conversations, they get to Maz's, and then she's captured.
(Side note - a lot of people are insanely quick friends in this movie. I thought it was bizarre that Finn and Poe were so happy to see each other since their previous friendship lasted less than ten minutes. I know Finn and Poe saved each other's lives, but it wasn't like Finn was devastated when he thought Poe was dead).
- Then there's the whole ending. Rey inherits the Falcon (not Chewie, not Leia) and travels to meet Luke alone. No Leia. No Chewie. Just this girl that, according to the story we have, he doesn't know. This is probably the second-most scared she looks in the whole movie, I guess. Wouldn't Luke like to see Leia (and vice versa)? Wouldn't Luke like to see Chewie (and vice versa)? Were they afraid too many people showing up would scare him?
I don't see any instance in the film where she's struggling. She's alone, yes. But it seems like she's chosen to be alone until *whoever* comes back for her. She is captured in the movie, but it's the only time she comes close to defeat. And she follows up her capture by overriding Kylo's "mind-rape" and flipping it around on him, performing a perfect Jedi Mind Trick on her first-ever try, and then dominating a lightsaber battle with a trained Sith. Seemed like a pretty nice day, all things considered 