Here's some more info on how your ex-therapist is in fact not unethical
Dual Relationships, Multiple Relationships, Boundaries, Boundary Crossings, & Boundary Violations in Psychotherapy, Counseling & Mental Health - by Ofer Zur, Ph.D.
This link explains the difference between boundary violations and boundary crossings. Here's an example, therapist accepts your gift of a BMW, boundary violation, vs therapist accepts your gift of toy (twice in 8 years) worth $70, boundary crossing. Therapist kisses you and grabs your butt, boundary violation, vs therapist hugs you, boundary crossing. Therapist starts a romantic relationship with you, boundary violation, vs therapist attends your wedding, boundary crossing. Therapist offers ongoing free sessions to new good looking client, boundary violation, therapist agrees to see old long term client for free while they get on their feet after losing a job, boundary crossing.
As you can see, big difference. One is ethical and a part of normal therapy and one is not. But you weren't hurt by her nice actions. You weren't hurt by her seeing you for free, or attending your wedding...