Please don't take this out on yourself for making the decisions you have for your family - I honestly believe it's a phase she's going through. Both of our kids are in day care. Our son didn't start until he was 2 (he had a babysitter come to the house the first 2 years) and our daughter's been in since she was 9 weeks old.
I don't get to pick them up any more - when I was laid off and accepted a less flexible job (because we needed me to financially), I lost the ability to pick them up and drop off. I could still do it, but they'd be in day care an hour longer/day, and I really don't think that's fair to them.
So, I don't get to see them playing and to talk to their teachers.
One thing I did last summer (when laid off and looking for a new job) was to have a snack waiting in the car when I got them. They were so excited (daughter was 15 months, son was just 3) to see what I brought. Or, I'd promise we'd do something fun like going to to the park, going on a walk, going to the pool when we returned home which made it more exciting to leave the wonderful world of day care.
I knew I wasn't supposed to be a SAHM, and I don't have regrets for the decisions I've made. I love my kids as much as any mom, and I believe they're thriving in the environment they're in.
I hope you can find peace in the circumstances and that this phase will quickly pass.