That's completely normal. Some babies feed upwards of 12 times a day and that's normal too. She is sleeping longer at night so she needs to feed more often during the daytime to get all her nutritional requirements. If you feel that the vomiting after feeds is becomming a problem, try burping her halfway through the feed, then when the feed is finished, just prop her upright a bit and not burp her at all to give her tummy time to settle.