I'm not able to make Mama Murphy's chair. Unless i'm the world's biggest goofus, I can't find anywhere in my Workshop menu to make the chair. There is no Special category next to Structures. Is this a fixable glitch or am I screwed? I'm playing on a PC.

Don't build the chair she's glued to it. Tell her kick the jet and put her to work, she'll be a productive member of society. Mama Murphy stays true to her word