GF [25F] Broke My [29M] Heart - Wants Me To Stay?

A month ago she was in a situation that would completely change both of our lives. She talked to her mother and friends about it, but waited more than two weeks to tell me. When she finally told me she is carrying a new life - something she always said she wanted and talked about a lot for the 3.5 years we've been together - she also said she didn't want to go through with it.

She is not in a stable financial situation, and it turns out her mother was a significant influence on her, saying how it would ruin her life, her studies, etc. I offered her everything - I am stable in life and gave clear examples of how I would care for her (buying us a home, my income being her income, etc). I also spoke to her mother when all of this was happening, who claimed she was being neutral and wanted her daughter to decide.

I continuously made it clear that it's fully her decision. But, it has felt like a severe breach of trust - not letting me in, asking for space for more than a month, and goes against everything we've talked about for 3.5 years.

And after terminating the situation, while she is taking full responsibility, she is also saying how deeply her mother swayed her and how much she regrets it. I don't know if I can trust her again. She now wants to move out of her parents' house and in with a girlfriend, and she says she needs me a lot. But I don't know what to do. I love her and care for her, but I also don't know if this is salvageable.

How do you get past someone saying one thing for 3.5 years and doing the exact opposite when it becomes real?