"she met this guy she did not know"...
we can assume she knows her sister... Therefore if we assume that the statement "she did not know" is true, then the guy being her sister cannot possibly be valid.
If the guy was her sister's husband, once again we can assume she knows her sister and how to get a hold of her... therefore if we assume that the statement the "she could not find him" is true we can rule out the sister's husband as again being invalid......
hence, I am left with the fact that the guy showed up at her mother's funeral, therefore she can assume that the guy has some connection of some sorts to the family and therefore if she can arrange another funeral in the family, the guy might show up....
Poifectly reasonable and logical right down the line.... sheez...
btw, they don't let me have sharp objects here