Dizzy Dina is a level 68 quest giver located at Toshley's Station in the contested territory of Blade's Edge Mountains.
She starts the following quests:
See List of Blade's Edge Mountains NPCs.
In Battle for Azeroth Edit
In Battle for Azeroth, Dizzy Dina, along with the rest of Razak's Roughriders can be found in Boralus Harbor.