S.H.
Okay.... When she 'wakes'.... is she really waking/crying/actually awake????
If not, then let her be.
MANY babies... do toss and turn or make noises while sleeping... they stir.
That does NOT mean... you then have to 'wake' your baby, and then whatever.
Just try letting her be. Maybe she is just stirring... and will go back to sleep on her own.
My son was like that.
BUT if my son woke AND cried.... THEN I would nurse him and go to him. THEN he DID nurse.... fully. And then went back to sleep.
So maybe... that is why, your baby does not 'seem' hungry when she so called 'wakes.' Because she is just stirring/tossing and turning, in her sleep. NOT it being... a feeding thing.
So. OBSERVE your baby... and know her cues, and noises and when she is 'waking' for a feeding.
Your 'interrupting' her when she 'wakes'... and then she grunts/seems restless and 'scrappy' in bed with you... to me, may mean that you interrupted HER sleep... and woke her... and then now, her sleeping got interfered with... and now she cannot go back to sleep... again.
all the best,
Susan