Of course there is, you just have to get her to lay on her side, bending hip and knee joints, put your one knee next to her back and the other knee next to her belly and...horizontal.
I thought I had seen, a long time ago, some comedy (cheech and chong, maybe?) where one less than brilliant character says to another something to the effect of "Asian chicks, they got it sideways".
Advice for life: Don't believe everything you see in movies.