Speaking about my SD10 here. I've been with my SO for a year and a half and we've been through and have done a lot of exciting things together with and without the children. I can't help but notice lately my SD 10 is super quiet. She distances herself from the other SKids and has been really snotty lately. 
The last weekend I had to watch the skids because their BM was off doing whatever a in a town that was two hours away and told us she couldn't take them. With the coronavirus my SO's mother cannot watch them as she is elderly. I noticed SD10 walk out into the kitchen...twirling her hair...walking and looking around the kitchen. I watch her hoping that if she needed something she would be brave enough to speak up because we have done lots of activities and shopping trips just her and I.... then she begins to try to open a gallon of water struggling....I asked would you like some water???.... SD10 yyyeeeesss. Thank you.  WTF honestly it's so strange. I understand anxiety and being shy but I'm also a woman who practices being assertive and has had to depend on myself for a very long time before I met my SO. So I'm disappointed to see her be so meek to even ask for water. 
I've thought that maybe she has distanced herself from me because I have been a bit stressed about my current court case with my BS8 or maybe she is having some issues about her Dad and needing to be with him more (my SO) shes been calling him dadda or Daddddieeee and has been asking she accompany her to the downstairs living room because she is afraid of the dark.... even though the light switch is right at the top of the stairs....
 

Have any of you seen behaviors like this from your skids?