Need Sherlock Holmes of Adoption Parenting

My girls are going through stuff lately.

Ella is crying when its a school day and says she doesn't want to go because she will miss me. This is in tandem with super sad crying and tummy aches galore. She doesn't have a fever, is eating fine and has fun at daycare and with us. It starts in the morning when she wakes up. Coughing, tears, tummy ache and repeat. I asked veiled questions last week. Today I was very direct. Is anyone saying mean things to you? Are you scared in your class room? Is anyone touching you where they shouldn't? Did anyone hurt your feelings? All of which is "No, I just Miss you mom!" I appreciate that but she didn't act like this the first 6 weeks of school and didn't miss me at all. Ella has not missed me at daycare either. What do I need to do or say to help her figure out this fear? Or is it because I picked her up at school Oct 8th and now she knows I can? The tears and sadness started that next week. I have talked with her teachers and have an open invitation to go to class anytime. I think I will see how this week goes and play it by ear.

Elizabeth is also going through something. I really wish I knew her birth families' name and how to get a hold of them as well as her foster family. Friday night when we got home from Parent's Night Out, Elizabeth had the saddest look in her eyes all of a sudden. I asked her to hold on and I put Ella to bed. Elizabeth and I then rocked and talked a little. She didn't want to talk much but her sadness was because she misses her foster family. I really truly wish I could pick up the phone and know that Elizabeth could talk to them. I know that would open new issues up as well but I hate not being able to give her concrete answers. Time to investigate if there is any way possible to find them.