Jane Doe was the placeholder name of a member of the terrorist organization who was fighting for the liberation of the island of Martinique, ALA, she along with Fournier appearing on the second mission, one of the mission objectives is to eliminate her, at the mission she is known only as unidentified Female ALA, IPCA agents kill her in a firefight. Her real name is never revealed but in Yemen, agents of IPCA recover Fadhil' files which was a surgeon who changed the appearance of terrorists as Mara Aramov and the Impostor Gregorov, it is discovered that she had a plastic surgery to change her appearance.
Armed with an M16K, she is significantly more powerful and durable than the usual grunts you encounter. A good way to kill her is using grenades - you can easily acquire the MGL from the magic box glitch before hitting the streets. Otherwise, a well-aimed headshot will bring her down.
M16K: Jane as Proust has a high accuracy with this weapon.