"I will not murder just for the sake of murder" Leela said, "And I will not work with you if thats what you plan. This city is innocent, apart from those about of the Mastermind's project. Do you two know what the project was created for, or haven't they told you that?" 

Leela herself only knew because she had a hacker friend, a mastermind who preferred to stay under the radar. His powers weren't very obvious-he was just excellent with technology could get it to do whatever he wanted, yet normally he just stayed at the level of an expert hacker. Easier to stay hidden from the government that way, or at least the mastermind projects.

Despite the fact the bug boy said he wouldn't kill, or said he was on their side, Leela didn't believe him, nor trust him. She thought he had his own motives, and she didn't like it. All she had wanted in the office, trying to convince Maria to escape with her, was just that. Freedom with the girl who seemed so misunderstood. Leela couldn't hate Maria for trying to take her in, not after the expression on her face, and she would protect Maria, if she could. She still had the taste of her blood in her mouth. She watched Flint warily