[Last Sinner]

Spoiler for Jaina MoP info:

It is revealed that in MoP Theramore will be destroyed by Horde forces led by Garrosh Hellscream. Jaina joins Kalecgos in the fight against the Horde in order to help recover a powerful artifact of the blue dragonflight, the Focusing Iris.[1] She survives the ordeal, but sees the Horde in a new light with a new antagonism towards orcs.[2]

Jaina is later revealed to be the new leader of the Kirin Tor as Rhonin's successor,[3] but she will not be leading as a neutral party.[4] The reason why Rhonin stepped down is unknown.

I wouldn't quite call that nuts. Vengeful, yes. Bonkers, no.