First off, HUGS! I am a divorced mom with two young kids, daughter 6 and a son 3. My ex left and moved 1,000 miles away and I have no family here. Girls I found are super intuitive and can be super emotionally driven with life changes. Some kids are more flexible, like my three year old son, but my daughter and I had a tough summer with her having all these stresses about the divorce and I wasn't even aware. Her actions were geared towards other things, like fear of weather related stuff, friend sensitivity and so forth. When we got to a family counselor then we got to the root of it being the insecurities she felt about the divorce and all her fears. We taught her to talk about her feelings and I will validate her feelings but teaching her how to not act out on them negatively. I am doing before and after school care here out of my house for the very reason my daughter really needed me to be close by and here for her with all the changes going on. DO NOT blame yourself and do not think it is your fault. You are not neglecting her, you are doing a great job working hard to provide for your kids. Some kids handle change differently. I would talk to her openly, let her feel things but tell her how important she is, carve out just you and her time and constantly remind her that you are there for her. She has had a huge change in her life and just needs to feel secure, it will take time believe me but it will come. Kids I found need honesty at a level they can handle but I spent so much time trying to protect my daughter about truths in the divorce that I ended up forcing her to draw her own conclusions which were worse. Insecurity comes from what they don't know and worry about. The family therapist helped my daughter and I communicate and allowed me to be able to talk to her in a way I am being honest but not giving her too much grown up information and things have improved TONS!