The worst about knowing she is done is when she says "if you had changed 3 months earlier we wold not be here". It makes me feel like a big failure after the many times she told me we had issues and I did not seek help.
That’s utter BS. Don’t believe it for a second. This is typical WAW behaviour. They RUN from responsibility and accountability. She is saying that to gaslight you into believing everything is your fault, and to overcome her own internal guilt that she made the decision to end the relationship.