Aurelia + Lightning Greaves vs Stifle

[sithantic]

{Aurelia, the Warleader}
{Lightning Greaves}
{Stifle}

Opponent has the greaves equiped to Aurelia. Aurelia attacks, her triggered ability goes on the stack. Can I Stifle that? I want to say yes, since I'm not targetting Aurelia herself, only the ability on the stack.