It's short and sweet but I like it. if you want to expand on this you could look into triggers to add more life to the script. Things like him talking to her or giving instructions? Her "thought" bubbles while she's got dick in her mouth. Expression changes - You can make her blink, look up and down.. cough.. that kind of thing. Mood and mode/arm position changes too. You can script all of these things to add more character to your work.
Some people have even written 4 entirely different sets of dialogue for each mood (Angry/Happy etc) and have the game change between them at certain points. For example if she passed out, you could add a line to change her mood to angry, which in turn would change every other line she says for each action like being held etc.
I may have ranted slightly, I realy like the idea of a playful catgirl. The choice to rough her up instead would be phenomenal. Perhaps even going as far as breaking her into ahegao mode as nothing more than a fucktoy. I think i may modify your script and expand on it for personal use, if that's ok with you?
Oh and thanks for sharing!