Freema Agyeman.com the forums

The Adventures Of... Miss Martha Jones
Once again Martha gets her own subplot, having been kidnapped by the Hath and promptly written off as "collateral damage" by an unsympathetic - yet strangely perceptive - Jenny. Her peril is short-lived, however, as before too long she has befriended her captors and developed a master plan to find the Doctor, end the war and blah blah blah...

Martha's good at befriending her captors! (RE Gridlock), though if you had captured her wouldn't you just wanna be her friend!?

I think capturing her to become her friend is probably illegal.. ...perhaps something like stalking?.. .or false imprisonment?? ......but I understand the sentiment of wanting Martha as a friend.

Yes well.. that's true and probably not the right way of going about making friends with her.
BUT if you were fully serious and sinister, her personality would make you switch anyway! Hehe.