After she was indicted for her crimes and sentenced to spending the rest of her days under max surveillance at all times, you were assigned as Medusa's delegated guard, keeping an eye on her at all times and making sure she doesn't go anywhere on her own without you around. You basically spend all your time with her.

[This is highkey self indulgent because I've had very lesbian feelings for this character since I was 8 years old.]

Also she can have any genitalia you want her to have lol