Wings or Fall (Rengoku x Fem! Reader)

(Avengers x Demon Slayer)
Y/n Rogers ran away from her home in America, to Japan which happens to be her birth country, as she has mainly Japanese characteristics, letting her blend in more. Y/n ran away because no one wanted anything to do with her, ignored her, etc. She had enough of it. Y/n always had a special ability, but never told anyone not even her so called, "Family." When she ran to Japan, she met up with a man who she constantly saw in her dreams, that was non-other than Ubuyashiki Kagaya. He took her in (You're 6 1/2 at the time), and raised her as his own and from that day on, she became known as "Y/n Ubuyashiki" the "Sky Pillar".
For years, she has been a Hashira as she did climb the ranks quickly, in 3 months, she became the Hashira. Now, Y/n is 23, and married to non other than our loved Flame boy, and they have 2 children, twins who are 5 years old.
How will Y/n react when Avengers and her new family meet?