Suggest Treatment For Fluid Filled Blisters In A Child

My six yr old female daughter developed blisters, that appear to have fluid in them on her hands and knees, and bottom of her feet today. They also started do develop on her legs too. She did not have a fever, nor were the bumps itchy. 30 min after I first noticed them the ones on her knees and legs see,ed to recede, now they look like pimples and are not very raised. Also, it seems like the ones on her hands reduced slightly. However, they are still present as are the ones on her feet. It has been 4 hrs since I first noticed them.