Willow had been aware of Dawn entering the room but had to remain focused on the spell so when Dawn spoke she turned and smiled softly at the younger woman.
She shook her head sadly, "The curse was made specifically for Angel I can't risk anything going wrong with Buffy" she informed them, "I'm working on a new spell though, it will take time but I know I'll be able to do it"
In truth Willow had hoped she would have enough time to rework the spell for both of them so Angel wouldn't have the curse hanging over his head either and everybody would be safe no matter how happy he got but necessity had made that impossible.