Nice to see you like Sarah. She'll have a more prominent role during Dimitri's route, so you should be seeing more of her!
The game does not have a log, but it might be added in the future (depends on if I have the funds to pay my programmer for it). If you kept accidentally pressing the wrong choice, I suggest using your mouse to read instead, as you can't accidentally click the wrong choice like this.
I'll think about a "are you sure?" button, though I'm inclined not to add it since the choices aren't terribly important - it won't suddenly land you a bad ending for example.
I recommend playing the game with your volume on though, you're missing out! The voices are cute and add more life to the characters :)
Thanks for playing!