92 pa wont move

My 92 pa is driven by my girlfriend (because it has air) and when I went to go drive it to the store I put it in drive with would not roll fowards or any way and when I do drive it I feel it wanting to slow down and then it stops if I let it roll. If anything was to go wrong with it she does not tell me because she dont want to pay to get it fixed. I need help cant figure it out.

More than likely you have brake problems, either sticking caliper(s) or an emergency brake cable rusted & binding. The easiest way to find the problem area is to check the temperature of the wheels after driving for awhile, if one or two are hotter than the others, you have discovered where to start working.