Responses
She couldn't protect him because she was a lot weaker than the empress. And he doesn't approach her because he doesn't want her to be targeted.
That must be the reason, but the comic never hinted about that and she looked like to be the favorite of the latter emperor so I just feel animosity toward her, I guess they did not want to add parenthood problems into the plot.
I am sorry Caesar's mom but they gave you the shady edit.
Caesar's Mom: People you love should be treated with care.
Me: Didn't you leave your only child to the care of an abusive woman? And Caesar doesn't even have childhood memories of you lady.