Hi, I know I am also coming into this late but have had the same experience with my 6 year old. Children get frightened about things they don't understand or things that are being kept from them. Also kids are clever and pick up on tension and stress. I say tell her the truth but without too much detail that will scare her and then try and keep life as normal as possible (hard I know when clinic is so far away). If you act like it is normal and fine, then your child will pick up on that and accept it as normal and fine. This worked with my 6 year old, but after she delt with hospital visits and doctors and started to realise that the end result would be a baby she got very naughty as she felt like we wanted a baby because she wasn't enough or good enough. We had to give lots of love and assurance that even with a baby we would still love her so much. After four turns at ICSI and no sucess she recently said "Doesn't matter about the baby 'cause those doctors never do a good job anyway and never make any babies." It made us laugh - you have to laugh during ICSI or you'll go insane! At least there is one person who is not devestated each time a cycle fails! Good luck and best wishes