We have family members just like that. When our grandma died, relatives that never gave a crap for her suddenly were all interested in "helping" us take care of her estate. All the years leading up to her death it was only my dad and my wife who took care of her while I was busy working. All those "concerned" relatives were nowhere to be found until "pay day" or so they thought. Most of them got nothing because grandma knew what kind of snakes they were and left them out of her will.