It's sad that in the conversations there is literally no compromise, not even much detail. It's like she's just bullying to make a point of being right, then leaving it vague for any future manoeuvring. I'm offering different things, but the replies are some twisted guilt trip about what is best for the family. I'm going to think carefully on my response, and will post it here. But if there is no compromise, I'll suggest we must do mediation.
Btw, in Au, mediation generally doesn't involve lawyers, but they may suggest that you consult one beforehand. I already talked to one today.