I wanna give you a hug! *HUG*
I think even at her tiny age, she knows Mumma will love her regardless - happy, sad, cranky, gassy, smiling, pooping, peeing - whatever. She sees you everyday all day, she doesn't see your Dad - he is a new face.
Times of day were an issue here. We did things in the PMs cause the mornings were heck!
Also, sometimes I think sometimes they just want to have those 5-10m to lay on the floor and stare at the ceiling and veg out a bit. It's hard work growing and changing as fast as she is right now!
Lastly, these babies grew inside us for a long time, they were connected to us, essentially part of us. It is only natural that they are very in tune to us and our emotions. Perhaps she is picking up on your feelings and mirroring them back to you? Owen reacts tremendously to me and my feelings toward him. If I'm worried about something like eating, he does the exact opposite lol - like continues to not want to eat! If I let go of it a bit, he does too.
Anyhow, this is all very normal and natural. It won't be like this forever I promise
You're a great Mumma and doing everything perfectly.