I want to say you wanna avoid the pre-92 XJ models because it was before the High Output motor and I THINK (someone correct me) there were issues with the blocks cracking on year models up the second half of 91'.
I had a 91 MJ and a 00' XJ. Both served me well. That said, a WJ would probably be more comfortable for your daughter as they are more spacious and comfortable. My mom still drives one with close to 200k miles on it. It's had its maintenance issues but nothing crazy.
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