Lesley ran into a mom we know from baby class while at work today. The interaction went like this:
Other mom: “Oh hi! Is Gus with you?”
Les: “No, I work here so am working now.”
Other mom: “Oh right. [To her child] ______ you remember Lesley. Gus’ dad. Or mom. Or whatever.”
Also, your 10 month old child doesn’t remember Lesley (or Gus for that matter) so probably no need to say anything anyway.