How to help my daughter (3) through trauma?

So a few months ago, I wanted a girls day with friends of mine and decided to find a babysitter. I was recommended a girl from someone I’ve know for about two years and thought I could trust. When I dropped off my kids, I had a bad feeling. But I brushed it off. I asked the girl for pictures of my two kids ( 3 & 18 months) and they both looked miserable. I had a gut feeling, but when I showed my friends they didn’t seem as bothered as me so I brushed it off.... Again.When I picked up my kids, they were both crying. The woman who watched them literally shoved the kids at me and shut her door. My daughter (3) was hysterical 😭 she told me in the car that the “mean blonde girl” pushed her outside twice and kept putting her in the corner. I have a feeling there is more she can’t remember.This is an event she has continued to bring up since it happened in June... She even brought it up to my husband randomly tonight. So I was thinking about it, and I think she may have been legitimately traumatized by what happened. Since then, she has displayed many anxious behaviors. She gets nervous when we leave the house, only likes going to certain places, and is VERY clingy. She started preschool at the beginning of the week, but has only gone 1/3 days because she’s so nervous to be there. When I picked her up from her first day, she said “the teachers were nice. They didn’t hurt me like the babysitter did”. She has had massive tantrums/panic attacks the other two days before going and I think it’s because of what happened. She used to be excited to go to preschool... Now she’s terrified.What do I do? Does anyone have experience with helping their little one through something so hard for them to process?I will add that she turns 4 on Oct 16, as that may be relevant to her maturity level. via /r/Parenting https://ift.tt/2oPvvTp