Hi! I'm trying to understand the psychological basis for the most common, oldest tropes in the Romance genre. Thought you guys would be the best to ask!

I'm taking some of the most popular romance stories and trying to find the common threads: Beauty and the Beast (aka Cupid and Psyche), Aladdin, Titanic, Pride and Prejudice, Twilight, 50 shades, and maybe Cinderella.

I've seen this framed as a version of Campbell's Hero Myth, but I don't think that's right (or, at least, it misses the essential psychology). There's something unique about romance (I'm calling it the Maiden's Journey).

Certainly modern romances deviate from many of these, but the romances that captivate huge percentages of the population for hundreds of years seem to have these elements:

1. Mom isn't a huge influence, she's bonded to dad
2. She has an essential inner purity, which is reflected in her outer beauty, and demonstrated by her compassion. Animals and children are drawn to her for this reason.
3. She feels constrained by the expectations she is under (either social or familial)
4. She wants freedom from those expectations and seeks it out
5. She has a brush with evil, and realizes freedom can be scary
6. He saves or protects her from the evil
7. He lives outside the social norms she is confined by, and often outside of any social norms. He demonstrates mastery of the "free" (but dangerous) space she wishes to enter
8. He is captivated by the beauty of her inner purity
9. There is an Obstacle, but they are pushed together by circumstance
10. The Obstacle pushes them apart, they experience the pain of losing each other
11. He makes a sacrifice regarding the Obstacle to demonstrate his love, she accepts him back
12. ----Something happens here regarding her need to remain "pure" and her bonding to him---?
13. ---Somehow, she finds the freedom she was searching for *through the bond of their love*. There's also some sort of protection element here---
14. ---Somehow, this leads to an awakening of her own sexuality---
15. Awakened and bonded, she is able to return to her society in a dominant position because she has transcended its confining expectations.

In particular, step 13 is mystifying to me ... How does this work? Why are these connected?

But all the last steps are confusing (and maybe wrong).

I would really appreciate any help ... I haven't seen this structure elucidated, and although there are clear overlaps, I really think this is psychologically different than the Hero's Journey (in particular the steps I don't understand) and shouldn't be shoehorned into a structure that doesn't fit (others clearly disagree with my view).