Can anyone recommend a good wide angle lens for a Nikon camera and maybe some good tips ?

In the past few days I video surveyed a couple girls about girls opinions on certain sexual fetishes.

My survey was only about 7/8 questions and then I took some pictures. Again I have a Nikon camera, a D3200 (hoping to get eithe a 5000 or 7000 later on) and I seem to have a problem where I either use her feet as my subject area I m framing around but I lose the girl s face or vise versa frame with her head first but lose her feet.

I have the kit lense 18-55 and a telephoto 55-200. The 200mm ok, that makes some sense; but the 18-55 I still felt like I couldn t get the whole girl in the picture unless I went with more of a wide shot, but I m trying to get a good close us head to feet with feet as the main focal.

One last note the space I was working with was kind of a side hall passage that people mainly pass through but it was still maybe 15X10(LXW). the lenghth part has stairs up to another building(college) the width is a wall on one side and wall and double door on the other.

I stood on the wall side and I put my subjects the girls on the side with the door, so we were somewhat close. None the less is there a better wide angle lense for this situation described or could I have used the 18-55mm better?

If a better lense is needed what are your reccommendations ? I started out more videographer than photographer and Ive had my 3200 for a year+ going on 2 maybe.Any suggestions or tips ?