Asking from anyone who might have experienced something like this.

Been divorced about 2 years now. Ex cheated and asked for the divorce. Long story short to save on money we both came up with an agreement together and she signed it. I had said my number one priority was getting primary physical custody. Not as a flex over her to use but because she didn’t want to be a full-time parent and also mainly the language was in case one of us moved that we had provisions in there for that. She’s a good mom when she is on, but overall she wanted to go party and go to sex clubs etc and express herself. Anyways, when the judge at the divorce hearing approved our deal, he did ask me as long as we both lived in the same city if I would try to keep custody even and open and everything. I said I would and I have held onto that. I have made her an equal voice in every decision we have and supported her to have as much time up to even 50% in order for my daughter to have both parents in her life. Of course I would like to have her full time always but I know that’s selfish of me and not for my daughter.

Fast forward and now my ex is wanting to file to get the amendment changed to 50/50 in writing. I said no when she came to me initially and now she is wanting to file and go to court over this. I know she is only doing this as a first step in trying to get full custody or worse force me to move. She’s saying a guy seriously or I guess she would say partner as she won’t do marriage anymore and they live together. Anyways he will have to go into fellowship for medical in a year which almost guarantees a move. I know she is doing this to get 50/50 and then when she moves to follow him file for relocation action which if at 50/50 she will have a better shot of getting granted and win.

She now is threatening that she is going to charge me for her lawyer fees because it’s “my fault” we are going to court because she thinks she should be entitled to joint custody in writing because that’s basically what we do now in costs we cover 50/50 and as far as time I probably have my daughter 60/40 as I’ve tried to be as fair as possible to my ex in giving time although I wish I wouldn’t. My question is what are the odds that she will win changing the custody to joint legally when there has been no evidence of our daughter having been affected negatively from current agreement and is there any likelihood that I could be responsible for her legal fees?

Appreciate any advice from experience, opinions or insight from anyone. At my core, I honestly just want to be fair and caring and loving to helping my daughter grow up as well as possible. I wish I could trust her in what she says they aren’t moving but she uses current language like I’m not focused on next year etc which makes me nervous and why I’m fighting. She also has a track record of not following her word: breaking her vows and wanting a divorce without cause, cheating on me, lying about what really happened during the cheating, and now going back on her word on something she signed when she hasn’t even been wronged by agreement. Tell me your thoughts.