With a noise like a dying cat, Jyn rolls over with the momentum of the blanket being dragged off her (rude!) and immediately scoots back to make room for Cassian. On his own bed. She'd fight it more, but he is always so incredibly warm that she isn't going to argue him joining her. She's more than happy to have a space heater next to her.

"There, you've got both now." Both being one blanket and his bed, she's still laying claim to the other blankets, nose crinkling up as if offended by her sudden cold. Because one less blanket means she'll freeze to death.

Maybe she can steal more of the pillow though... "How was the mission?"