A spanish book serie about a girl who goes on adventures to protect the world
in book 10 on a movie set the actrice goes missing (who looks like the main girl)
after some sleuting she finds the girl tied up and gagged in a closest, she than unties her and takes her place to ambush the badguy
Also, is it just me, or does Amanda look kinda like Sally from the game Gylt? Particularly in the hand-drawn cutscenes. Both these books and that game are made in the same country: Spain. Similar art style!