Why on earth would my cousin tell my grandmother her house isn't a cemetery for antiques ?

My cousin she is age 29 recently just bought her first home mind you my grandmother offer my cousin beautiful decor and furniture that were down from generation back. My grandmother and I went to my cousin house and help out arranging everything now my grandmother told my cousin there is no need to waste money that she has a dinning table and couch and a few expensive Victorian antique my cousin got really aggravated yelling at my grandmother this were my cousin words:MY HOUSE ISN'T A CEMETERY FOR YOUR TRASH! . In my opinion that was very disrespectful grandma was only try to help yet my cousin tells me she wants new furniture you can't be serious this woman is setting her self up to get into debt. Crazy I can't believe it. Why would my cousin do that?

Why on earth would my cousin tell my grandmother her house isn't a cemetery for antiques ?
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