Martha wants to tell Tosh about her friend and how Tosh needs to get out, rather than wasting her life on a man who will never see her, but Tosh is bound to Torchwood.
Instead she decides to show Tosh the way out, which leads directly to Martha’s hotel room and into her bed. That’s where she finds Tosh showing her the way and demanding satisfaction that Martha is happy to give.
Tosh’s whimpers of release as Martha probes deeply with her tongue and holds Tosh’s hips, remind Martha of her true calling.
She needs to take care of people.