This is very common. Sometimes they go through stages where they wake up and need some nourishment or even just to be held for a few minutes. It doesnt really relate to their feeding schedule. They can only hold a certain amount in the belly so she may need to have some formula after waking. My son used to go to bed at 8 and then be up about 1130 or 12:00, I nursed him and he went back to sleep, even though by then he was eating primarily solid foods. Then he would be up at 2 again. He didnt have much at night time..
You are lucky that your daughter sleeps as much as she does at night. 2 of my 3 kids didnt sleep all night long for a long time... in fact my 6 year old still doesnt sleep thru the night.
It is ok to hold your baby when she is crying. They sometimes just need to be held. If she is screaming.. I wouldnt just leave her to cry. Sometimes they just want to be held. Sometimes when there is a change in your routine... they need some extra love. and they associate holding and your nurturing as love. Hold her, feed her.. comfort her til she goes back to sleep. This is a stage that will probably pass.
I hope that eases your mind.
W. in Watkins Glen
Mom of 3 kids
Korey age 16, Whitney age 12 and Andrea 6