Weird Letter "Time to say Goodbye to Stephen" that disappeared

[opaque trench]

I had a weird letter that said to meet someone at the lake to say goodbye to Stephen. It disappeared and I have no quest for it. Does anyone know what this was?

[inner hawk]

Doesn't Erika have a lobster named Stephen? Maybe that?

[jagged lake]

Macy has a lobster named Stephen

[inner hawk]

Yes! Sorry I always get them mixed up

[remote falcon]

Macy has a heart event with Stephen, it’s not a quest but let’s you know how to trigger the event.