Yeah, I can't see a problem with an eight year old girl having a doll that also has type 1 diabetes. A kid that has a rough start in life deserves to be able to play in a way they can identify with.  It makes me happy that this company makes the effort to cater to this niche market who deserve the happiness of playing with a good toy, a doll without hair (for example) seems like a simple thing, but I can imagine it makes a big difference to a child to have a companion that is going through cancer treatment alongside her.