How do I get rid of a villager with low friendship?

[Rosie :)]

I am also looking to get rid of Cherry, who's at max. Pietro and Pompom suck. My sister recently got Diana and she is giving her too me. I reallllllly need too get a villager out fast (I tt) please help!

- - - Post Merge - - -

*screams* I GOT THE FREAKING BIRD OUT OMG OMG OMG OMG OMG OMG OMG! I HATE THE UGLY DUCKLING OMG OMG OMG OMG OMG OMG OMG OMG OMG