Swamped

The name of the show is Laikenne. You heard it was about a wealthy merchant who Matilda conned in an early scene - but judging by this, Matilda, played by one "Minnie Laikenne", is the leading role.

Maybe this is a different performance entirely. A special event for the last show. Gives people who already saw the others a reason to go again. Then again, there are other venues listed.

And if this old woman really is a member of the troupe, they'd know if that's the case. Maybe you can get them to slip up.

"Huh. I'd heard Matilda Laikenne was in the show, but I hadn't expected her to be so central. And Minnie Laikenne? Is that an actual member of her family?"

"Probably just trading on local celebrity," the old woman mutters. "There's tons of stories about Matilda Laikenne, and if she is technically in the play, why not use that to draw people in? No clue about the name, though. Matilda left town ages ago, so anything could have happened."

Well, they seem to be aware of Matilda Laikenne as a local figure. On the other hand, you're not sure just how famous she is - so if you're dealing with an actor from out of town, they might be overestimating that.

This does seem like a useful direction for the conversation, though. You just need to lead it a little more carefully.