Like the other poster, my daughter has T1D. We use the Dexcom 5 though.
But we use Grifgrips.
https://www.grifgrips.com If your daughter is 5 and her sensor is coming off, she'll love them. I let my daughter pick them out and we only use them when we need to (like all summer with all the swimming she does, or if the sensor is coming off). They have plain ones as well. That along with some adhesive on her arm before we put on the sensor (don't cover the part where the needle will pierce the skin though) and we don't have any issues. We used the Dexcom 4 before this, so we've been with a CGM for a couple of years now.
Good luck!