Idk if the story gets blocked if you advance to other quests first, but here kitty kitty you should get that earlier in the game.
as for Rika Part 2 I haven't actually completed that myself, but the others will trigger eventually, i found going to each area during the day and night seems to trigger some of them at least.
Now the Big one, A Heated Situation, you give her the potion at night in your room, if the scene doesn't trigger then perhaps advancing to the later quests have somehow errored the story board. I seem to have an issue with this quest too. I've given Cece the Potion and got her Pregnant, but unfortunately now I cant breed any of the Monsters no matter what combo I try without getting a message about the breeding pen selections saying "Cecilia is currently Unavailable"
I hope this help somewhat and also if anyone has any further info on XenaWrath's or my own problems please reply below
thank you in advance.