Great game! But definitely too short. It's very carefully designed and, regarding graphics as well as mechanics, unexpectedly satisfying. Maybe opponent's turn passes too quick and it's hard too follow her choices.
The only thing I can say: develop the idea! For now, it's just single-use pleasure. After beating the game (which takes a couple of minutes, up to an hour), you can only replay it. Some kind of "story" mode would be great. And by that, I don't mean solicitous writing of some spicy plot, but increasing difficulty level. Following opponents (with the brothel keeper as the final boss
) should use more advanced tactics (sometimes, cheat a little) and player's deck should expand as he collects cards with new effects.
Keep it up.