Well, she said, and I quote "No one upsets my mom" to the man who, well, upset her mom. That quote just reeks Buffy-ness and badassery. Followed quickly by this image
A few minutes after the quote above, the man who upset Rose's mom, apparently, in an altercation with an alien (it's Doctor Who, what gives) loses his true love, and Rose quickly goes to his side to calm him down. I really, really love her compassion.
Images from Doctor Who, Series 2: Love and Monster