I love and hate this. Love because it says so much about what the form chosen by the Moment meant to the Doctor. Hate because the Moment didn't chose Rose, folks, the Moment chose the Bad Wolf. It flat out said "In this form I'm called Bad Wolf.
Use this but make the balloon helium and she and her friends were suckong the helium to make tgeir voices weird and she accodentally sucks in the rong and starts choking she goes to the hospital and he meets her there and asks again