Mazzranache is a level 7 rare tallstrider that can be found south of Thunder Bluff wandering around the Thunderhorn Water Well in Mulgore. (I have indicated where she patrols in red on the map below.) She is especially desirable for low level tauren hunters as she is the only PINK tallstrider that can be tamed below level 31. The only other tamable tallstriders in the game in this color are the Deviate Plainstriders, which are level 31-32 and are located in Southern Barrens.
|Mazzranache & Mulgore Hatchling|
You can also use this macro to help find and tame her:
/cast Tame Beast
Although she is rare, she is on a fairly short spawn timer. If you don't see her right away she may just be wandering around or recently tamed/killed.