Exactly what Jo123ABC said! It takes some children a bit longer to adjust than others. Trust me, it's harder on the parents.
Don't show any distress any time you mention dc, always talk about it in a positive light(or make your best attempt!). And never try to sneak out either, just in case you've thought about it.
Ask the dc for suggestions or if you can make something together to share with her 'new friends'. Ask if you can let her have something small from home for a friendly reminder for the day, such as a photo, etc. Does she have an attachment item she could use temporarily? You an ask your dd to make you a picture when you drop her off.
I can only imagine how difficult it must be as a parent.
I've been on both ends and it tears the ole heart strings. But try not to feed into her worries and fears or she'll think there's really something to be afraid of and it'll take her much longer to adjust. Good luck!! Give it more time before you think about truly bagging it.