I know that GAL will limit it. I can’t always be available but I don’t never want to be available either
I think this kind of works itself out, provided you actually have GAL activities. Then its not an 'excuse' its a fact. You have somewhere else to be and you shouldn't feel bad about being there.
If you don't have something else to do, and you are capable of listening for a while, you listen. Its what she needs at that time. When you are getting defensive or tired, simply tell her. I'm feeling tired or defensive and need some time away from this conversation. Can we continue it on (insert appropriate day and time here)? Its what you need at that time as well.
Me40; W38; S12; D9 BD11/19/2018 D filed 12/20/18 D Final 7/2020 Being the best example I know how for my kids to see.