Welcome to this site, you will find so much love and support on here, there is always someone that seems to be able to assist.
I am 57 so no young children but I have young grandchildren and they were fine with my loss of hair. I ahve no idea what their parents told them but they didn't bat an eyelid at coming to the house and seeing me bald. I never went down the wig path I chose to wear scarves and hats and that didn't faze them at all. I do remember lamenting about how I looked and my grandson who was 7 at the time told me I was still beautiful. Now that no biggy except he has Aspbergers and they tend to be very literal in their comments.
We are all here behind you, take care
Donna