Okay so now we can add completely delusional to her character. It's very unrealistic (mainly because people don't put a mental block on memories that recent that fast especially with nothing traumatic having happened; maybe if this went on for 10 years or she got hit by a truck (and didn't get isekai'd)), but honestly I much prefer this development to the shit show we were heading for. If this means the bullies just stop (though in of itself that makes the premise and opening even worse if it was that easy) and we get rid of that silly clichéd drama, then I'm all for this turning into a psychological yandere high school love comedy (even if the reasoning and logic behind it makes less sense then quantum psychics.... Well actually scratch that analogy; that'd imply it does make sense and I just don't get it; this just actually makes no sense, but I'm all for it). Now, if we could just get a love rival and have her go full yandere (I like yandere; don't judge me).