Ok. This has happened to me once before. Go on a few dates with a girl, and by the third we are making out heavy back at my place.

Most recently, I had been out with this shy girl and it was hard to find the right time to make out in public. I got her back to my place. Started making out, clothes came off. We made out heavy for about 2 hrs. She said she couldn't go any further because she was trying to 'do things right' or be 'good'. So I didn't push any further. She said she wanted to stay, but had to go because she lived kind of far.

She was going wild while we were making out. A friend told me definitely follow up with her the next day, so I did. No response.

insights and/or criticisms appreciated.

ok. she ended up calling me but in retrospect (and after talking to her) I think we made out too long and that has kind of fucked up the very strong frame I had built. Fuck!

Yea don't make out anylonger than a minute or so.
If she won't let you escalate further than that, pull away and let her see her mistake.
If she doesn't jump on you by herself, you can try again after a while.
Remember that you're the boss, and she's happy to be with you, not the other way around.

So how to recover/regain the situation from hours of making out

Well..put her hand on your cock and tell her she makes you hard, and now you wanna fuck her. If she resists, pull it out of your pants and start masturbate in front of her, then you can ask if she can help you out.
If she won't, continue and then when you're about to come, ask if you can shoot the load in her face.

If she doesn't put up with any of this, she's a bitch. But still you shot your load, so who cares?