"Promise?" Annie murmured, mostly just to goad him a little. She was going to need his cooperation, anyway, considering she was kissing her way down his chest and slowly dropping to her knees.

Clearly, the best way to get Diego's pants down was to get herself down to pants level. And as soon as they were down to her satisfaction, she was putting a hand on his hip to assert that unspoken authority, lest he try to move away from the wall.