Toddler getting “handsy” at daycare

I’m sensitive about this right now, but I need advice if you’ve been through this. Our 3.5 year old daughter is very active, very dramatic, loves to be animated, etc. She began daycare in July and they’ve had nothing but amazing things to say. I’ve always been impressed because at home, she can be a wild kid. At home, when she has hit or been aggressive, we’ve talked it out and had a consequence so she absolutely knows it’s not acceptable. When I picked her up at daycare today, the teacher told me she meant to talk to me on Friday…that our daughter is getting handsy with others. She’s hit a couple of time, she grabs, has a hard time sharing and doesn’t always follow rules. Now, I know my child. I’m not going to say I’m surprised or be defensive. She’s acted like this at home and we’ve talked it out, set expectations, had consequences, etc. Most of this happens with her little sister (sharing, grabbing, shoving). I’m an elementary teacher and have been for over 12 years, so I’m well versed in behavior interventions and child psychology. When I heard this, I asked that they keep me updated if this happens and we will work with her at home and support them. Even though I feel experienced, I feel like I don’t know how to address this at home. I thought we were doing everything right. I’m actually mortified if I’m being honest. How have you handled this if you’ve gone through it?