Vrinda

Daughter of demon Kalanemi, married with Jalandhara. Vrinda shared her mystical powers with her husband and Vishnu could only destroy him by intrigue. For this she cursed him to become a salagrama.

Vishnu promised the terrified Vrinda to be allowed to live in his kingdom and to grow on earth as the Tulsi plant, the plant that is sacred to him.

A similar story is Tulsi and Shankhachuda.

http://hindumythologyforgennext.blogspot.com/2012/05/jalandhara-and-vrinda-story-of-tulsi.html