@unime,
@Lucrecia—
The story is Japanese foodie science fantasy, so being troubled about explanations may be redundant. Still, a simple one is available. The objective of her creator was to make something very close to
H. sapiens. So, absorbing material and energy as she does suits her function.
@nachtness—
That's the general expectation. The explanation will probably be that she had to punt to transferring her consciousness into the dog robot, when she found herself collapsing sooner than she'd hoped or somesuch.
A problem with translating Japanese into English is that many things that are not gendered in Japanese are gendered in English. Unfortunately, most translators just use the male gender. So a lady is called a “lord”, a duchess a “duke”, a mistress a “master”, and so forth. This robot is seeking her mistress.