Help! Should I wake my baby to eat? (more info)

Co
My daughter is 4 months old and has been sleeping through the night for a month now. Well tonight she had a bottle at 8. She drinks 7oz every 4 hours. She ended up spitting up a lot and it was some what curtled looking. She drank only 5oz and seemed to spit up a lot. She refused to drink anymore and I have her a bath, checked her temp (normal), and put her to bed. She is sound asleep and I'm unsure if I should wake her around 12am to drink a bottle. I'm afraid she didn't have enough or she will dehydrate. Any advice? Should I wake her or leave her sleep?