She did nothing to stop him. When Carrie committed to a thing, she over committed. It was a strength and a failing. The bed was just big enough that when she squirmed to help him get the access he wanted, she didn't fall right off the bed. At the same time she surrendered to the kiss he wanted, parting her lips with a happy whimper.

She put herself to work caressing his torso, wanting only to give him contact and pleasure. It they ended up fucking like bunnies, great. If they ended up touching and making out, so be it.