As soon as she was told to be quiet, Donna shut up. It was a relief to not to have to talk and waste energy. She feared that if she started to talk, she'd be randomly spitting things out and she wouldn't be able to stop. Though she did look confused as Sexy came over, she wasn't quite sure what was going on.
Well until there was that glow, and suddenly Donna understood perfectly what she was trying to do. She shouldn't know how it was supposed to work, but she supposed that Sexy was going to sort her out, and siphon the energy off of her somehow.
Just let go? Donna was scared, she didn't know if she could. Then all of a sudden she didn't have a choice. It felt like she was being kicked in the head, but she started to glow, her eyes. And there it was, the biological metacrisis kicking in. She hit the floor to her knees and cried out, shutting her eyes.