I was a horrible husband, and a scumbag father. Having amnesia wasn’t an excuse. Even so, because of that, I lost my family instantly. In order to save Nero– my son and heir– I killed my daughter Neoma. And then I had to witness Mona, my neglected wife, die in front of me. Why did I have to regain all my memories at that exact moment? I wanted to die with Mona and Neoma. And, just when I thought I could finally be reunited with them, I opened my eyes and realized I turned back time. I returned at the exact moment Mona and I were in the middle of discussing divorce. Divorce? No way in hell would Nikolai divorce Mona this time!
TO BE HONEST, Neoma was willing to turn a blind eye if she saw Dilan Choi treating Lewis harshly because that was Lewis' wish.
She realized that she could protect Tteokbokki because he was her bodyguard. Hence, she had an "excuse" to protect her aside from the fact that she was a decent human being. However, that wasn't the same case for the others.
[Like Lewis said, they can't afford the consequences of fighting against their rich bullies. I can protect them when they're with me. But what happens after that?]
So, she decided to clench her fists and simply ignore the "mild" bullying.
However…