Girl Dramz

I feel as though I have hit a wall in terms of a little social/ emotional trio. I just can't find a solution for these three girls. There is always something that tips the three of them off. I've tried every strategy I have in my toolbox to fix it. One parent emailed Trevor about it, it's just been a lot. I'm unsure of where to go next. Trevor thinks I've completed my "job" of trying to help them and I can now say "work it out yourselves" or send them to him. Nothing feels right for me anymore, I feel like no matter what I do I can't please the girls, I can't please myself and I can't please their parents. It's the only thing that lately feels to me in some manner, unbalanced or incomplete. Any ideas?