An amnesiac warrior woman with a mysterious, magical tattoo that compels her to do things against her will teams up with a band of eccentric comrades on a quest to uncover the secret of her markings.

You could make her act upon the discovery of what the tattoo makes her do, that would make her proactive?

>>>How does this maker her "proactive"?

It doesn't.

That's the problem.

The tattoo magically compels the protagonist, under certain circumstances, to perform some acts that are dangerous to herself and to others. She goes on a quest to find out who put the tattoo on her, so she can get them to remove the curse. How does this make her "proactive"?