Quantum: huh, that’s not so bad, I don’t think Nebula could interfere unless she was taken captive and had wanted revenge for that.
Nebula: I can only help when either the entire universe is at stake, or if I feel up to it, and as much as I hate team rocket, I can’t just remove them from existence. I could but then people would wonder why their children or husbands or wives went missing along with their Pokémon.