Perfect Replacement || F. Hargreeves X F!Reader

I started this randomly in class idk if I'll continue it

Five Hargreeves x Female Reader

A few months after Five disappears, (Y/N)'s parents are killed in a car crash. Reginald, not wanting to waste the opportunity to get another one of the children, immediately bribes the courts into allowing him to adopt her. When she gets shot on a mission, she is injected with an experimental serum Reginald was working on that causes her to stop aging. Now, stuck in a 13-year-old's body, she must navigate life as a Hargreeves, constantly living in Five's shadow.

etc etc five comes back they have a forced partners to lovers slowburn etc etc

I wanted to find a way for them to look the same age without having one be mentally way older. I also wanted (Y/N) to have powers without having to work through some weird sibling/incest shit like they tried to push with Luther and Allison. (Y/N)'s power is shapeshifting because I'm lazy.

I would love some feedback on the first chapter to see if I should continue this!