There are several ways to free Mel: talk to Mel, then simply wait until the current day has passed (Mel will make a snide comment that Bobbi couldn't even wait a day), pickpocket a key, steal a key from the nearby office, hack the nearby protectron to kill the guards, bribe the guard nearest him or convince the guard to let Mel go by passing a medium or hard persuasion check. In order to do this, Bobbi requires assistance in freeing an old associate, Mel, from the security office.
After, she asks the player character to meet her in Diamond City, where she reveals her plan to break into the Diamond City strongroom under the mayor's office. From here, one needs to go down into the Dig, a tunnel starting at Bobbi's house basement, and help the diggers fight the mirelurks. She says that she's planning a job that requires discretion, not sharing many details at first. The Sole Survivor receives the quest after speaking to Bobbi No-Nose in a backstreet in Goodneighbor.
