Previous villagers coming back?

[danceonglitter]

My mum used to have Flo and Gwen in her town, but both quickly moved out. However, when she goes into Main Street, she keeps seeing both of the penguins there at various times, and none of her current villagers.
She's wondering if this is normal and why it keeps happening, as it hasn't happened to either me or my brother yet, so I can't help her. Can anyone shed some light on this, how do you get rid of them? Thanks!​

 

[Cranky Squirrel]

After four villagers move out of your town, you'll start to see the villagers that left visit Main Street from time to time. As more villagers leave your village, the older visitors begin to cycle out. The two penguins will leave eventually--once enough other villagers move and come back for a visit on Main Street.

 

[danceonglitter]

Thank you so much I'll let her know!