This is totally disrespectful to the coaches that applied for the position. She'll just be there while Luke and staff actually runs the team since Luke didn't have the credentials to be a Head Coach. Kids will not leave because of their loyalty to Liberty City and Luke.
Serious though, I say give her a fair shot at the job and see what she can do. You're assuming there may have been other applicants. I kinda doubt it although I don't have insight into the hiring process to back that up. Those kids really need all the help they can get, regardless of who ends up coaching. It's my understanding that the team has sucked for a long time against the other local competition.