When it comes to Laura, I don't think her situation resembles either medical identity theft or identity theft. Laura is willingly giving her medical information away to her sister, and her sister is taking advantage of her medical benefits while knowing that her sister is okay with it and gave her permission to do so. If this situation was different, for instance Laura's sister stole Laura's medical information and used it to receive medical treatments without Laura knowing or giving consent, then I believe it would be medical identity theft. Both Laura and her sister have knowledge and consent regarding what the other is doing, so I don't believe their scenario matches what the definition of medical identity theft or identity theft entails. This is because, a key component of medical