E.C.
I would give it two weeks an dit thing sodn't change I would take her out of there. I had this happen when I put my daughter in a daycare as well. She was in preschool two days a week and with family two days a week as well and then we decided to put her in a small daycare and all sorts of things starting changing. She would cry when I dropped her off, she became mean and snotty, she had been potty trained for well over a year and had multiplt accidents daily and then one day it hit me that it might have been a great daycare, but something there did not mesh well with my daughter(who was three at the time), so I took her out and found an at home daycare two weeks later and once she started there she was back to her normal sweet self. Try to be patient with her and explain when she acts out that it's not right and if it continues much longer I would take her out. When it comes to your children safety and well being should be first. Even though shes little she can tell when things aren't right.