jeannie,
u can try to feed her in the middle of the night if she eh eh eh again.. she shd be able to go back to sleep after the milk..
to me, if the baby can sleep thru the nite w/out any struggling/crying, then its fine not to feed them..
but if they eh eh eh, i guess they are hungry..
did u check her diaper ? is it becos its too wet & heavy or she poo-ed ?