Because there was no update at the end of January, so there was some hope that this one might come a bit earlier on the month after it was originally expected. But people aren't good at reading the DS updates, like the one that made it clear this would be towards the end of this month at the earliest.
I hoped that too until a week into the month at which point it became clear it wasn't just going to be a few days late.
Best guess would be missing or corrupted images. I'd try re-downloading and re-installing the game.
Consistently come home from school right after swim class every day. Once or twice a week, you should find Alice smoking by the pool as soon as you get home.
You can try skipping school (or at least Sports) to hang out and wait for her Ann needs to have got her maid job (I think) so she's off the premises. There's no school response to just not going in (which seems weird you thing they'd care) or you can come home after the shower and it'll go straight into a smoking scene some days as Travisbic said
might be worth a reinstall and copy in your save files probably wont make things any worse
