What??I have the impression that if she really ran away from home, perhaps she fled from mistreatment or abuse... because from 86 to 91 there was no contact, it's strange... then a friend sees her and she pretends she doesn't know, it's because she already decided her destiny... the man who accompanied her might have convinced her to go away forever and for his benefit...
I hope he is alive and happy to get away from her family... and if he is not like that...
rest in peace