Okay, so some of you may not have noticed that she had bruises on her sides and her back and her stomach the entire time because of the beatings she'd gotten from her father. Those beatings, not her being trapped in the car and losing air for that time, caused her to lose her kidney.
Second of all, it is possible for her to get a kidney that fast, if someone in the hospital died within the alloted time before their organs can be used, and they were a match for Millie, then yes, she could get a new kidney that fast
For the anon who just reviewed, your answers are right there. Will you see this? Maybe? Probably not.
Thanks for the review though :)