Yo so despite me being unclear on timelines in general, I'm assuming Stephen's canon point is after that one time he met Gwen and acclimated her to the 616 verse/brought her friend back as a ghost (I've read like...the first couple issues of Gwenpool so I am only broadly familiar). So he probably should have been 4th walling his MCU self but oh well, I didn't do that.

Anyhoodle, that's all to say she's welcome to know things and say things about him and that he'll remember having met her through the whole magic egg thing.