Strange Bed Fellows, Meeting Meg.

Does anyone know what the hell is going on with this conversation?

She said I didn't have her attention at the core but now I do.. and who am I.

There are 2 options tell her you're from vault 76..

The other one is "and what if I am?"
Am WHAT?

Then she responds with "Well if you are, then you're trespassing and we don't take kindly to criminals" oh the irony I still have no idea who the hell im suppose to be in that dialog tree.

What did I miss?