No worries, that happens to me too!
A list would be super useful! It helps me pinpoint as I scour the script again. Yes, there are a few tricky endings, and you can meet the other girl character if you get on Tori's path. I do recommend getting all the pseudo-ends so you can know everyone really well, if you do your choices right you'll even have everybody interact as a group! So I 'd be more than happy to note you the walkthrough if you'd like, and you'll be able to unlock 2 fanarts and all the CGs~ And the character profiles and stuff. I hope to add more extras in the update!