The narrator of the video above makes the martyrdom of St. Perpetua to sound a bit more like a suicide than a martyrdom. However, according to the principal source on her martyrdom, "Perpetua, that she might have some taste of pain, was pierced between the bones and shrieked out; and when the swordsman's hand wandered still (for he was a novice), herself set it upon her own neck. Perchance so great a woman could not else have been slain had she not herself so willed it."
For $1.99 you can also rent a one-hour documentary about the martyrdom of St. Perpetua and those with her at this link.
Read more about St. Perpetua here.