Wants to eat more at bedtime snack-what to do?

my 6 year old duaghter was diagnosed with type 1 few months ago. She is on multiple injection. She used to eat 20-25 carbs as a bed time snack. lately she has been wanting to eat more~ about 40 carbs? what should i do? increase the humlin or give her some humlog in addition to her regular humlin?