She says she's unable to give up smoking; she's completely addicted.
S+be+～+to n./pron./v -ing
He admitted he was addicted to cocaine.
Some children become too addicted to chocolate.
Her son is addicted to computer games.
I don't want the kids getting addicted to stupid TV programmes.
My children are hopelessly〔absolutely〕 addicted to television.
Tom was unduly addicted to study.
He was passionately addicted to pop music.
It doesn't take long to become addicted to these drugs.
He was addicted to drinking.
He was chronically addicted to gambling.