Heya! ZZ grew up in northern NJ/spending a lot of time in the City so depending on ages, they could've known one another as teens. If she's a lawyer, ZZ went to law school though she never passed the bar and they could've been classmates (would also know silbers) who would've been another classmate. If you go the tech route, ZZ is a copywriter by trade who does a lot of work with local tech companies