No, that is intentional, you always have to wait a few days between events with the same girl. Helps you keep the harem balanced.
I'm well aware that having to wait a few days is intentional. What isn't intentional, is that ingame message saying that character's story is done when there's still one to do.
Tagging
Runey so he sees this and laying it out as clearly as I can:
I replayed from the beginning.
Ashley's Lv40
birthday event, at the end, gave me the message that there was "more to come in the next version", and her character page updated her story marker to "To be continued..".
For more clarity, her Lv40 event was the one in v.12. The ACTUAL one, according to my ingame stats, is 41,
the beginning of the search for Ms. Ren.