1983 nissan/datsun 4wd truck

help! my daughter has been driving this truck and now its parked at my xwifes house and i need to get it running on the cheap. the tranmission was rebuilt at aamco about 14 months ago. she says it will only go into third now.???

Have you even gone over there and tried to move it? That’s the first step. Might want to bring jumper cables, if you know how to use them.

If the slave cyl is bad when you push in the clutch pedal the clutch will not disngauge enough to change gears, something cheap to check.
What all did they do to trans?