The physical description and experience sounds like a girl who i thought was named Amy (perhaps Annie). I guess the names Amy and Emmy could sound similar depending on the persons accent. So it could be the same girl.
Amy is 30ish, much younger than most girls in the area. She is slim with a nice body and had great english. Cute too. She apparently has been in the states for a long time. She also allowed extremely limited roaming , which sounds like the girl in the OP. When i put my hand and her butt, she pushed it away. Nice girl though.