J.J. - many thx for the link.
.
Stahr told her sister the family should not bother visiting, but her mother said nothing will stop her.
.
Does indeed sound like this girl does NOT want to associate but the mother thinks otherwise!! I don't think this will be a very happy reunion if it occurs.
So - maybe the girl had reasons for what she did - that is speculative - and she sure must have been wanting to escape - something.
Over and above that tho - another major bad aspect, is all the time and expense invested in trying to track her down and search for a body etc ... that in itself is highly irresponsible. ... putting it very lightly.