There is something of the wolf about you.

The Doctor had called it beautiful. Rose hadn't quite been able to understand why the Doctor had called a huge, slavering werewolf 'beautiful' when it was clear to Rose and to everyone else that it was nothing more than a killing machine, intent on the assassination of Queen Victoria and the ascent onto the throne to begin the Empire of the Wolf.
But then Rose watched as the werewolf savaged Captain Reynolds. She stood, utterly transfixed, staring at the massacre before her eyes.

Something of the wolf about you …

In that split second as the werewolf pounced, Rose understood the Doctor's words.
It was a truly beautiful sight.

I am the Bad Wolf.

Rose stared and stared, her fear slowly ebbing away as she marvelled at the speed and grace of the creature. She almost felt a kind of affinity for it.
She sympathised with it.
She empathised with it.

Everything must come to dust. All things. Everything dies.

Captain Reynolds had to die. He died a good death, a noble death, fighting for Queen and Country.
Captain Reynolds died as the wolf slaughtered him like a lamb

Who's afraid of the big bad wolf?

Not me, thought Rose. It's beautiful.

You burn like the sun …

It brings life and death. It's beautiful.

All I require is the moon …

Beautiful…

The big bad wolf …

"ROSE!"

And Rose was pulled away from the big bad wolf and into the safety of the Doctor's arms.
She had seen the power within the werewolf and realised something.
She wasn't scared of the werewolf any more.
She was terrified.