Yeah... at this point in watching through the anime, I thought her mother was just the worst. To do that to her own daughter. And using the excuse that she's 'needed' by the world more than her precious child.
Raku rightly stands up to her about this shit and tells her off. Man cares for her so damn much, whether he admits it to himself or not. And he'll work his ass off to get her that time with her mother these next chapters.