Birds of a Feather

 is a quest in Fallout: New Vegas.

Quick walkthrough
This quest can be activated after completing several jobs for the Van Gaffs in Freeside. To start it talk to Glory inside being the counter. She will say Jean-Baptiste has a job for you. Speak to him and he will task you with bringing Rose of Sharon Cassidy to him.

She will be down at Mojave Outpost unless you have already gotten her as a companion via another quest. When you bring her back to him he will reveal his purpose is to kill her. From here you can choose to let him kill her, or become hostile by saying "Shoot her and you'll be sorry" If you choose this method you will have to kill all the guards inside the Silver Shop. Alternatively you can let her die and you will be payed a large sum of caps.

Detailed walkthrough
First you will have to speak with her about a job gaurding the front door, then she will ask you to deliver a package. Oh and by the way do NOT buy the gun from the kid it has 0 damage and no bullets.