"May I know where you came back from?" Lexus said before she said 'important' things that would not benefit him at all.
Lexus didn't mean to be rude to his mother or suspect her like this, but what happened earlier and everything that was revealed between Lis and Leon made it difficult for him to trust his own mother.
It was an annoying feeling because he didn't want to feel that way at all, only, Lexus couldn't help but be suspicious of his own mother.
Lis knew this and understood why Lexus treated her a little harshly and coldly.
However, knowing this did not stop her from coming back and helping her sons once she found out that they were in serious trouble.
Because after all, Ramon was her son. Her biological son, and she wouldn't just sit back if someone tried to hurt her son, including Leon.