I would not go back. You are perfectly within your rights to cancel the appointment at 7am (it is NOT appropriate to suggest that your internal body clock, which is a biological fact, has anything to do with "not making an effort") and look for another therapist.

Sometimes the first impression can be misleading, but to me it sounds like there are just too many red flags with this one - she seems to be jumping to conclusions really quickly, and a therapist simply should not do that.