My niece had a GAL when her mama died, bio-dad/sperm donor was an A, my dad and stepmom were trying to get custody.
Our experience was very good. At the age of 3, my niece had her own lawyer, psychologist and GAL. The GAL was the one who really looked out for her best interests.
Sperm donor's family had a lot of money and a high-priced lawyer. It was the GAL who overlooked all of that and saw red flags when my niece visited them.
It seems Mr. Charming is slipping at hiding his true self? I know you've seen who he is, for a long time, even when he charmed everyone else. I truly believe in karma, though I admit I get impatient for it to come back around.
You are doing the best for you and your kids, and that speaks volumes. I truly pray that you and the girls find peace throughout all this.
Hugs and prayers,
Amy