Honey, please, let me plan this.
A quiet and reserved individual, silently intelligent, unlike most of Ravenclaw does not like to flaunt it. Keeps to herself within her own house since she doesn't think anyone would understand her if she tried to explain her true thoughts about mudbloods and muggles.
Her wand, her brains and Rascal. He bites.
Letha's parents were both purebloods and both had been in Slytherin. They had not wanted to become Death Eaters during Voldemort's reign but they supported his beliefs, as silently as they could in order to protect their standing in the community and Letha. They were slightly disappointed when she was sorted into Ravenclaw, but weren't surprised because of her brains.