I killed Mama Murphy with drugs because I wanted that synth recall code I didn't know about it at the time, but I just knew she'd give me something useful . Also because all she did was sit around instead of working my fields or getting on her knees and paying tribute to her king. I didn't know that if you get her off drugs she starts working. I regret nothing. I don't care if you're an elderly junkie, if you work, you get to eat and live. It's that simple. My main man Sheffield gets it.

SHE GIVES YOU A WHAT
GODDAMMIT
I GOT HER OFF DRUGS BECAUSE I KNEW CAIT WOULD LIKE IT
****

she gives you the code to shut down the one courser you face during the main quest, you get no EXP for using it on him though and he's a bit of an easy kill