just wondering if it might also be linked to what she is wearing?

I know when I wore an acrylic/polyester top I used to need to change my top or re apply deodorant a couple of times a day. but wearing mainly cotton tops its a lot better! also, as messybuthappy said, if clothes are not washed/dried correctly then they are still going to smell.

also, I've found some deodorants just don't do the job! one of the girls at dancing just uses a body spray, not deodorant and the teacher had to suggest she actually used a deodorant.

I am sure with sensitive support you can help.