6 year crisis

I feel like I write about Lily more often then Miriam. Lily is always into something, says cute things, and is at a fun age. Miriam has always been a calmer child and fairly obedient. I am having trouble with her lately. I don't know if the pregnancy is bothering her or it is just a 6 year old thing. First lately, she is ignoring most of what I say. She just doesn't even respond. I would rather her tell me No than have to repeat myself and get no reaction. She gets punished, but is not changing her attitude. Also, she loves to stay with my mom while I run errands or other things, but lately she is crying to go even when I want her to be with me. I don't mind her spending time with my parents, but sometimes I want her to be with me. This hurts my feelings, but I also get angry as it has made me late to things or messed up my plans for the day. I have talked to her about both of these, but she has no reason for doing them. I really don't know what to do about it. I have talked with her and she gets punished also. I am planning on a little date with her. We can talk more and just spend time together which we haven't done in a while. She is a good child and very responsible. She also enjoys things that I like to do like going to plays and historical sites. I really enjoy her, but right now I don't even really want to do something with her because of her not wanting to be with me. That is very petty though. I just hope that if we reconnect, she will listen to me more. I really need her to be there to help me.