2:21 `And I gave her time to repent; and she does not want to repent of her immorality.

And I gave her TIME to REPENT;

Jezebel (and those she symbolizes) knew that she was leading the church at Thyatira astray. She (they) mixed pagan beliefs (rituals) into the church, yet she (they) apparently congratulated herself (themselves) on her (their) leadership capabilities. She (they) had to make a choice:

and she does not want to REPENT of her IMMORALITY.

That was Jezebel's choice. Sometimes leadership "power" goes to the head and the longsuffering patience of the Lord is interpreted as "It's OK to continue....I haven't stopped you or punished you." BUT Romans 2:1-8 says, Jezebel (and those like her) are storing up wrath until the revelation of God's righteous judgment. We don't have any choice in that day. God does.