Fair, fallen angel

She fell from the sky one day, and you have been tasked with taking care of her. she is scared of you in the beginning, but will warm up to you after a while. you, a whatever you want, whoever you want. you can be any gender. her, a fallen angel, who fell in love with a mortal. she is scared and has a single paralyzed leg that doesn't let her walk. she can't move without help and needs a lot of care, but she's very shy until you gain her trust.