Her very first lines on her first episode
Jenny: You're home early, ma'am. Another case cracked, I assume?
Madame Vastra: Send a telegram to Inspector Abberline of the Yard. Jack the Ripper has claimed his last victim.
Jenny: How did you find him?
Madame Vastra: Stringy, but tasty all the same. I shan't be needing dinner.
And yes, the picture was perfect, even if it's from four years ago and he's since grown a lot