Are there alternate ways to meet Jack in Mass Effect 3?

Question

I waited too long and the Grissom Academy mission went away =(. Is there any other way I can meet Jack in ME 3? Or was that the only chance?

Answer 1

No.

Well, that's not entirely true. You'll see her again, but it won't be friendly.

Answer 2

If you didn't do the Grissom Academy mission, Jack will appear in a later mission as a Cerberus Phantom. Aside from using her trademark taunts, she will be no different from any other Phantom.

This is similar to how Morinth will appear as a Banshee unless you killed her during Samara's loyalty mission in ME2.