I liked the scene without the girl. And sometimes its a good idea to have an open ear if people tell you to get rid of a girl ;-)
If you want to keep here in the scene, then you need to give us some more hints I guess. The landscape looks very peaceful and lonely. So its hard to believe "this kind of girl" in that area. She looks very "dressed up", more as she would come out of a luxury pool or the like.
- give us some clues, why someone is out there (a road with a small parking place, a track with a sign, something that tells us that there really might be sopme people around
- probably move here more to the back, to the shore just coming out of the water
-the cloth looks strange, is this a towel?
-the pose looks very "stiff" to me.
The easy way would be to get rid of here. The hard way would be to "blend" here in the scene.
best,
Walli