Well she had to cancel her date with Rob to look after Caroline so you never know... I'm all about giving choices
I recommend at least checking out the Dom routes
They're quite different to the standard adult game definition of dom and maybe you'll prefer Shadows look there to Harem
As for Kate, she's been through a lot and will eventually be an option in Harem but every girl is optional - don't have to say yes to anyone
Next Alison update will be for the Love route so you'll find out who you can trust then but working on my other game right now and back to Alison after that