Well the attachment shouldn't be equal. Maybe she let you in too close, recognized it and now is trying to (re)establish some healthy boundaries?
Re moving back to your mom- are there really no alternatives? Finding a job? Asking your mom to lend you some money? She obviously does care about you in some way letting you move back in with her... Or any other relatives? Anything, cause this is a priority. Do you pay for therapy? If so, stop for a while to have money for the rent.
Your C should have helped you with going through the alternatives. There nearly always are some.