Did you talk to her everyday to see if she has any new comments about you other than asking you to go out & buy stuffs?
Did you go to the bar everyday (at least for Armida, I dunno the other 2 hangout spots) to see if your glad is there & up for a drink?
Did you go near your computer every day to check if there's an email that sent from your glad (companion quest 1)?
If you did all of those (you have to check every single day btw, yea I'm still sane after I did them all... I think

), you should get 3 hearts & after you completed the 1st main story quest (bloodaxe factory), your glad should sleep with you in that same week (4th heart). I got up to that before I got into silver (at least that's how it worked for Armida).
But currently the snuggle scene is bugged (at least for Armida) cuz everyone's favorite human girl that's been buffed for several updates at this point (Leona) hogged the spotlight.