Has Wendy been a prostitute for her whole life?

She appears in season 6 episode 4 which is supposed to take place in May of 2004. This means that Wendy has been a prostitute at the exact same motel for at least 6 years since she is doing the same thing at the same place in Breaking Bad. In the latest episode, she seems to already be a pretty experienced criminal because she easily noticed the undercover guys watching her and Kim. I just think it’s weird that she was at the same place doing the same thing for such a long time. Why is she still at that same motel? Why hasn’t she moved on?