I think Tyrande being friends with Vereesa and the Night Elves finally having bonded with High Elves (as far as lending the Silver Covenant their Hippogryphs) was a huge leverage for her to reaccept the Highborne
She sent the Shalandis spies as a response for the Blood Elves’ hijacking of Exodar, she isn’t omnipotent enough to know it wasn’t really the Quel’thalas Blood Elves
she doesn’t hate the Nightborne, she was just giving them some sort of an “I’m watching you” warning, besides the Suramarians just simply hid themselves like cowards while the Kaldorei Resistance did their jobs
maybe if Illidan didn’t pour the second Well directly underneath the World Tree he wouldn’t be jailed. And it was Malfurion who imprisoned him
Also, I will shamelessly plug in my post here like an attention wh*re to help pool more inconsistencies found like the one @NightWalker posted: