Andy's mom is Emily, the original owner of Jessie.
I buy it. Pixar does this kind of stuff all the time. They don't even care if people find it or not.
Correction. Pixar USED to do this kind of stuff all the time. After they released UP!, that studio has mailed it in ever since. I'm tired of the crap they put out now and wish they would go back to writing original stories that families can enjoy together. Rehashing the same tired old movies one after the other in sequels is complete and total horse ****.