^2:21 I have given her time to repent of her immorality, but she is unwilling.

I have given her time to repent of her immorality,

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:

but she is unwilling.

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 what day that will be. God has that choice.