LOST Memory Card with photos of a wedding and a baby!

My sister in law lost her camera memory card back in late March/Early April of this year that had photos of my wedding and her daughter's birth on it. It was lost while she was out running errands in the Fremont area. I recently found a link to the Craigslist ad (now expired) through this website and I am hoping desperately that someone will know who has this card. If you have any links to help me find this card, please let me know!