Maggie was born and raised in Monongah by her father Earle, with her mother, a suspected chem addict, leaving the family early on. After her father and some of his miner colleagues got trapped inside Monongah mine, due to Deke Sykes blowing up the entrance in January 2076, she tried to gain entry to the mine to search for her father, but was unsuccessful. Due to her past experiences with the Hornwright family, her attitude toward the only surviving member Penny is grouchy at best.
↑Vault 76 resident: "Are you from Monongah?" Maggie Williams: "Yep, born and raised in that dying mining town. I was glad to leave that shithole, especially after what happened to my pops."
↑Vault 76 resident: "What about your mom?" Maggie Williams: "What about her? She left us early on. Who knows what got to her first; the chems or the bombs."
↑Vault 76 resident: "How did he end up in Monongah Mine?" Maggie Williams: "He and some other townsfolk got some liquid courage one night and decided to go up to the mine. I knew that damn bourbon would be the end of him somehow. They kept goin' on about getting the last of what they could before that Deke Sykes from Hornwright Industrial closed up the mine. Well, that son of a bitch ended up blastin' the entrance closed with everyone still inside."
↑Vault 76 resident: "Why didn't anyone try to get them out?" Maggie Williams: "You don't think I tried?! I clawed at the rubble until my hands bled and they had to drag me away. They told me that my pops ran off, and said the others left Monongah since there was no more work. I think it was some sort of cover up. They either got paid off by the Hornwrights to keep quiet, or they didn't want to deal withe the expenses of a rescue mission."
↑Vault 76 resident: "You know Penny Hornwright is in Foundation, right?" Maggie Williams: "Yeah, I know she's in town. I've been keeping an eye on her. Shame about her face... I guess the Hornwright's ugliness is finally showin' up on the outside."