Daniel actually took it off Christine when he put her to bed the night before. You can see it on the table next to her bed in this page - sarahn.deviantart.com/art/D4P5… So now it's just sitting in her room, I imagine.
Pore Chrissy, that face in the third to last panel. I think she just realized that Daniel isn't the sweet guy that she used to know. I see tears in the future page, they may be Chrissy's or maybe Daniel's.