Failed proposal followed by breakup

I am 25m, and I was planning to propose to my gf (25f) of 7 years. We have been together since school and we have always had an amazing relationship. Emotionally, financially and physically happy and secure. However, she was always avoiding spending time with my father, and I have a very good relationship with my dad. He is emotionally present, supportive and giving me good advice. He is sometimes critical, but I understand that some of the decisions I took were wrong and he always felt I was being controlled by her.

She had taken a stance that she felt disrespected on a number of occasions (this was my dad being protective during my early 20s) and I addressed these issues and asked my dad to apologise. He did on some things, other he did not. She had been there when my parents divorced and my dad remarried, something she feels strongly against morally.

But my partner did not want to make an effort and see him or my stepmother , which brought fear about the family dynamic for the future for my children. When she asked if I was wanting to get engaged, I was willing but I always wanted to ensure that their relationship would improve.

my dad’s mum died and we both went up to the funeral (took some convincing), she got along with most of my family but she avoided my dad. After that we planned to get engaged (she knew it was happening) in April. I booked a luxury hotel, found the ring (which she picked out) and was planning to propose.

A week before the proposal, I told my father I was planning to do this, and he warned me that this dysfunction was deeply affecting me. He also thought I had changed so much as a person in this relationship, but I thought that was normal when being with someone, who was quite different to me.

I started to panic before it happened, and I needed up exploding in front of her, which ruined the moment, and she asked me to not propose on the holiday.

After that brutal trip which I thought we were going to break up, we made up and she understood that it was to do with a conversation I had with me dad that killed my confidence. After a month, I started to feel so much stress about what happened that I emotionally shut down and told her I did not love her anymore. I then broke up with her.

I feel terrible about this situation but I know it was caused by this dysfunctional relationship between her and my dad. We almost agreed to meditation, but this was the day before the breakup.

I’ve had therapy and spoken to my partner and we seem to be trying to understand each other, but is this something that you can recover? She feels so broken by this but I want to understand if this is something long term can recover?