Stealth Girl

Stealth Girl is a companion perk in Fallout: New Vegas gained while Lily Bowen is a companion.

Effects
With this perk, Stealth Boys last twice as long while also granting Sneak Attack Criticals an extra 10% damage. This perk makes a single Stealth Boy last 4 minutes (instead of 2).

Behind the scenes
A device with the same name as this perk was planned for Fallout: Brotherhood of Steel 2.