This is probably a silly question but here goes. I did the Concord part (though I had to turn the difficulty down to handle the deathclaw (not the best hand eye coordination). They came back to Sanctuary but the Moma character asked me for a chair. I built one on the carport but though she sat in it she still said she was looking for a chair. What did I miss? Was it some special kind of chair? I'm not tracking. Thanks.

Yeah, it's a special chair that's called Momma's Chair. It's a red plush chair.

There is a chair with a lable special I think. All the way to the left. Can't remember if it was in the main build.menu or the chair menu.

I just said "no" cause I'm that awesome and their are already like 100 chairs in that town

When you say 'Yeah, sure, I'll build your fscking chair, like I don't have anything better to do." you get an option in the build ribbon to assemble Mama Murphy's comfy chair. It'll be to the left of the buildings category when you enter the build menu.