User blog comment:FairyRaven/Fairy Tail Chapter 456: Orders, Review and Commentary/@comment-24277053-20151011000735/@comment-7418318-20151011064422

Sayla has little to no reason to be pissed at Minerva.

Sure Minerva stabbed Kyouka, but by then Kyouka was just seconds away from dying anyway. If there's anyone Sayla would be pissed at it's Erza, Mirajane, Elfman or Lucy.

Erza because she messed up Kyouka pretty good and thus has the most responsibility for Kyouka's demise.

Mirajane for defeating her and thus ruining her image in Kyouka's eyes.

Elfman for failing to kill the FT mages despite the Macro.

And Lucy for breaking Alegria and thus snatching a sure victory out Tartaros' hands, claws and tentacles, though it's doubtful she knows that it was Lucy who did that, but if she finds out, she'd be the number one target of hatred.