@BlueCatMage,
@shinsenryuu
You know, when you live with someone you learn ahout this person, especially if it an abuser.
Because you need to know how this person think to not anger him/her.
So in absence of backstory of the character, you can suppose that the MC know very well how to not be in the bad side in her mother (chap 18), the fight with the buttler in chap 19 tell us that she "need" a permission to prepare a room for buy dress.
She knew how think and behave her mother and what appened if she did or say X thing.
@nerdy01
She probably doesn't think that she did something wrong. She think her daugher is her thing and she can do whatever she want with her.
She dump all her anger and don't think much about it. My mother is the same (without violence), she didn't think that her behavor have negatif effect on other.
See that like she scream all of her lung because she is angry and doesn't think that she can cause any problems for the neighborhood.