I'm kind of confused about the heart containers. I've been doing my best to always make sure I have at least one spare container for each girl before any events where their hearts go up, but I've kind of hit a wall.
I have 6 hearts for Amber and Amanda already. 4 for Kath, no empties. 3 for Valerie and 1 empty. I just got up to the event that should raise Kath to 5, but after it, she is still on 4 because I lack a heart container.
This made me look up the walkthrough and apparently I only have 1 more container to find in the entire game? How do you max out all four girls then?
Also, if I don't have a container when the heart up event triggers, do I just miss out forever? Really not a fan of missing out on content when there is no possible way you could know the EXACT order you are supposed to do shit.