She falls in step with him, and with nothing for her to carry about with her, she hurriedly grabs the door to open it for him. It's the least she can do to help, since he's apparently going to be doing all the infiltrating.

"I guess that works. So long as it gets me in!" She's already imagining all the delicious treats she'll find, and she can't help but wonder what brings him to perform a caper like this. "What are you planning on grabbing? Do skeletons, uh... Need to eat?"