Isabella, as written, is... confusing. Like, she makes a big deal out of being a manipulative threat, and for some reason, is allowed access to the players computer, pc, and information, while crowing about being the only way to relieve the players urges, or the 'bet' is to not end up being plowed by a bunch of guys.
This angle is remarkably less impressive if the player is already a whore, or has dealt with sissy school.
The player clearly has multiple ways to get their rocks off, and if the player has dumped the initial girlfriend, I see little reason they'd deal with a less effective but still horrible substitute, much less give them control of their home. Also, if they really want a reliable (or fuckable) maid, why not just employ a friendly face from the already existing cast?
Kind of amusing that the Trans best friend remains the best and worst option, as the player still can't make the obvious move of shacking up with them as they adapt to this new lifestyle experience.