<human>: Can you summarize the given text in a few sentences?

My sister has been addicted to drugs for over two years. At first it was crack, then it was pills, alcohol, meth and now I think she's doing heroin. I didn't buy her a gift because I don't trust her not to return it and spend the money on drugs. She didn't seem bothered by it, it's not like she got us real gifts anyways, just a bunch of candy paid for with foodstamps. My parents are pissed though because I excluded her. I don't feel bad because I get her stuff all of the time. I work at a used clothing store and I'm always giving her nice, brand name clothes and shoes which she loves. Despite her being a junkie, we are pretty close.
<bot>: Didn't get my drug addict sister a gift for Christmas, my parents are pissed. I don't feel like I did anything wrong.