Why would my sister be upset because I give her the silent treatment?

It's been two months since I cut off my older half sister after we had a huge argument after that experience I've realized that to avoid saying hurtful things to each other it is better to cuttof people in silence. So move in silence it's a good way to avoid saying hurtful words to people you can't stand mygoodness it honestly it feels more peaceful. So yesterday morning my older half sister called and she left me 25 message yelling that why I cutt her off that I should love her no matter what that I must forgive her. Well I a a very honest person I am not going to be a fake ass lie yet still talk crap behind my sister's back. The narcissistic and self entitlement my sister claims that she deserves that I give her an explanation yet she is asking me for $5,000 just so she can get an apartment for her self because her boyfriend kick her out. At this time I am thinking this b**** has lost her marbles. I seriously can not believe my sister's entitlement statement and remarksnthat she left on voice mail.

Why would my sister be upset because I give her the silent treatment?
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