Good Morning S., I think your little princess is doing great. A lot of times little folks digress for a time.
It is really hard to keep on track sometimes when they have one set of instructions at home ( wearing big girl panties) and day care having to use the pull up type undies. I wonder if her day care provider asks her or takes her to potty often or just waits for her to say something.
When training our gr son Corbin I took him maybe every two hours and read books or sang songs while he sat on the potty.
If he didn't do anything, we went back in 30 minutes. I have never had a potty chair, for any of the gr kids, only the seats that go on the toilet.
Al I can suggest is encourage her while she is at home with you, take her often and give her alot of praise and At'ta girl's look how big you are. Put pretty glittery stickers in a book or on a calendar when she goes potty. Give her maybe a special treat or small toy when she has a certian amount of stickers in one week. Also talk to your DC provider and she what she/they are doing during her time there.
God Bless you S., It will happen so hang in there my dearheart.
K. Nana of 5