That sounds a lot like our daughter. At a point when we knew she could do it, we switched her to underwear. The first day went well, the second day was bad, by the third day she totally got it.
edited to add: This was last week for us, so I totally relate. This week has been great for the most part. Now she'll tell me if she has to go, and she'll go before we leave the house. She's even dry at night, although we still use a pullup just in case. I don't want to change sheets at night.![]()