I would NOT use a tractor. You have a halter broke calf - she's just spoiled. Go back to basics. Walk her to things she wants to go to - REWARDS. Tie her, brush her, than walk her to her FEED. Than walk her outdoors & turn her loose at night. In morning, repeat, tie her up, brush her, walk her to FEED. Make it a rigid ROUTINE. Cattle do much better when they know what to expect. NEVER let her eat/drink anything, unless you lead her to it for now.
After walking her to feed for about a week, if you have another animal that is halter broke. Lead off with the experienced one, & let your daughter FOLLOW with her heifer. Most don't like to be left behind.
If she needs coaxing, hook a second lead to a larger - WELL BROKE animal, with your daughter leading her calf. When she balks, let the other animal drag her forward, then release pressure - REWARD!
We have done the tractor bit, or my big husband dragged them around with brute force - don't believe in doing it that way. My husband doesn't believe in it anymore either. REWARD - REWARD. If she takes one step, you stop, release pressure & scratch her. Than ask for another step with short tugs of the lead. NEVER PLAY TUG OF WAR - YOU WILL ALWAYS LOSE!!! (except when hooked to another animal.)