Can you ever turn the sneak function off?

[Phineas]

Forgive my q...I'm a bit of a newbie. Lately, I was playing with a pretender who had sneaking ability. Well, she had been off by herself searching a province (let's call it province 1) for sites and such. On the next turn, I was planning to attack an adjacent province (2) with an army from a different adjacent province (3). I wanted to supplement my army with the magic of my pretender, so I was trying to bring her in from province 1. But since she has sneaking ability, I couldn't get her to join in the fight...she would just go to province 3 and hide there.

Is there any way to have avoided this? I know I could just pair her with some unit that *can't* sneak, but there should be some way to turn the sneaking function off. Thanks in advance.