There are a lot of gray areas in this case, and one can certainly put themselves in the position of a mother and want to go in and find a way to force Alicia to come home and rescue her immediately. However, the answer of how to help Alicia, in my opinion, is not to overly focus on her. She did not commit a crime. As
@BeginnerSleuther points out, she should not be punished for "bad decisions" - especially if those were and may not be of her own making.
I believe it is best to let the investigation play out. If this guy she is with did indeed commit a crime by grooming her when she was a minor and luring her away from those who have legal custody, he is the criminal and should be brought to justice. Once he is arrested, Alicia can then perhaps make different decisions, but it may not happen in the timetable we think it should.
Either way, I pray Alicia is safe - physically and mentally.