See, a lot of people tend to be confused by Rose continuously viewing Mom Lalonde's actions as spiteful, with her often getting mischaracterized as Unreasonable. After all, Mom's trying, she's spending so much money on her!
Mom Lalonde is a Neglectful Mother who just happens to be Rich. A lot of parents with some amount of Disposable Income, in lieu of actually spending time with their children or attempting any legitimate Relationship with them, prefer instead to just spend a fuck ton of money on them and call it a day. That sounds great to some - on the outside, it does sound to them like nothing but the child getting spoiled. But it's not a replacement for legitimate love and care. Rose fully would've been an iPad Baby if Homestuck took place in the modern day. It becomes difficult at a point to not take gifts - no matter how expensive - as an insult, because the child knows that the parent is doing that to get out of genuinely caring for them.
Rose maybe didn't take this as an insult at the time because she was too young to understand why her mom gives her such extravagant gifts, and why those gifts were a bad thing. She was young enough to have that work on her, at least to an extent. But she's older now, so she has further context. And now it just sucks.
Obviously, there is a bit of nuance in this conversation due to Mom's Alcoholism, but... A parent being a drunk certainly doesn't make you feel any better. Usually makes it worse, actually. By a lot!
