Witch Way to Space

"Even if you got there undetected, how would you open the gate without a Velorian mage?"

"You're missing the point! By opening that bloody Space Gate ten years ago, the aliens flooded our system with magic. We have all the Human mages we need right here."

Meet Glen MacAllister, 96, war hero. Professional thorn in people's sides.
His bonny daughters got lured into Velorian space, like so many credulous lasses, never to be heard of again.
While most Human governments turn a blind eye in favor of their purses, he finally found someone eager to help.

AI Marshall, infamous governor of Mars, is assembling a crew to man a priceless prototype spaceship rivaling the advanced alien tech.
But the enemy is onto them, and Glen is forced to rely on a woman he hates to fight free the last of his crew and get them safely off Mars.
Among them their 'mage'.

Someone, who's not who and what she pretends to be.

Say, Witch Way to Space?