I fought temptation to call this "hey, soul sister"! Anyway, since we don't have a female overload, I might as well put this out there formally.
Approx. age;; 20-23. Something reasonable, considering her brother is 22.
Connection;; Regan has a brother named Brady who is in a coma. He has a girlfriend. I envision the two of them as serious- maybe he proposed very shortly before being shot? you can figure that out, but he never introduced her to Regan. So when girlfriend shows up at the hospital, there's a conflict because the two of them think they're the important one who should be calling the shots. And maybe Regan's parents, who have moved to the city very recently, love her, so there's a jealousy issue, too- which would be compounded if said girlfriend was a hero with awesome superpowers which Regan obviously doesn't have. Other than that, you can go wild- well, not too wild, but that's the only really plot I have for this character, so you can have epic times coming up with craziness.
Other;; If you take this, we can talk about Brady's condition together, and maybe even revive him and get someone to play him, since he'll kinda be a godmod for both of us.