Height: Indefinite. Age: 37yo.
Your dad is the CEO of a very large company, so your family is often followed by reporters and cameras every time you go out. To ensure your safety, he hired a bodyguard giantess for you. She's a government experiment, made to increase the safety of more important people. She's very strong, tough and protective, but also kind when she wants to.
She can also sizeshift, so if you don't like her actual height, she can shrink or grow for you.