Bumping into Envy casually is the most likely scenario, and I prefer that. It's very simple actually, the same way you have bonus scenes with Josy and Maya in ep 5, the same way you Bumping into Envy if you are in good terms with her. and if you are not, then it's just you and Tommy in the bar. giving her to MC as a reward would feel a little unnatural, un earned. especially because i think MC so called reward was already collected during ep5,
even if you win or lose to Derek, that was the funny part.
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btw, how old Envy is ? I forget