Atz, I am not sure where you are in the game. In the sense of what exactly comes before what, at the point you've reached in it. But if you look for any Walkthrough, it should give you some guidance on "what leads to what".
In the meantime - you seem to have had Kate visit the police station (since you say she has the laptop). Some developments that may be around the point where you've reached in the game : ....
Has Kate had the email from Lance?
Has she been back to the police station to look for more errrm advice from Lance?
Have you had Kate accept more work from Victor after 8 in the evening? (*cough* hotel *cough*)
Has Kate visited Room 18 and Room 15 in the apartment block where she lives? (See Walkthrough section 31.1)
Has Kate been through the various drink and dance routines at the Club at weekends? (2 drinks, then later 3)
How far have you had Kate experiment with Oliver (since the shoulder massage in the Salon)?
The laptop eventually brings up a dating site & a small selection of toys and hats for sale (which confusingly Kate may already have had, for free) ... but you probably have to do some of the above first.