Hello, InRealLife45, and welcome to Psych Central! I highly doubt she dropped your insurance to get rid of you. Normally a therapist would indicate that things are not working out, and say you would need to get a new therapist. And ethically they should make some suggesttions for other therapists.
Alas, Medicare doesn't reimburse doctors/therapists very well, so some professionals are not taking any new Medicare patients or keeping their Medicare patients.
I assume $120 per hour would be her regular fee for people without insurance.
I suggest, if you can afford it, that you meet with her one or two more times to get some closure and to ask her these questions.
But, honestly, I don't think she meant to hurt you personally or get rid of you.