Tranny Issues

I have a 1994 Rodeo.  It started out that every once in a while the tranny light would come on when you first started it.  It would feel like driving with emergency brake on. If you turned it off and back on, it was fine.  Then it was slow to engage when you put it in reverse. Then my daughter borrowed it and drove it cold and when she got to her destination, it would no longer go in any gear.  So I changed the tranny filter and fluid. It worked...kind of.  Then the car felt like it was slipping out of gear shifting felt weird. Now... It will go into reverse and drive, but wont shift out of 1st.  Not even if you try to do it manually with low gears.  And it wont move at all if you use winter mode.  I put in  a transmission treatment no help.  Any ideas?