I knew Cindy's sister had an album coming out a while back, but when the release date came and the only mention on the santana.com site was Carlos' endorsement that "you should hear this," I assumed he was just plugging his sister-in-law's album and didn't actually play on it.
Turns out I was wrong. Carlos and Cindy are both on the first track of her 2014 album, Mercy (the song is actually called "Mercy, Mercy.")
Cindy is on the entire album and Benny shows up for the final track, "I'm Alive." Carlos only plays on the first song.
You can hear the track via the link below at Tracy's site. It's also on Spotify and YouTube and available for purchase via iTunes, CDBaby and Amazon (although the Amazon version is their on-demand CD-R setup).