What figurative language is used in this sentence?

My pretty little pet is very sweet, but it runs away with an awful lot of money.

plz give options it would be alot easier to ans

Explanation:

a myth is something that is told for many years that u go looking for and cant find and a truth is something that u can find in real life and can be story's of for example:

mermaid's and unicorns: u can't find them at all so they can be a myth cause u hear story's about them once u go looking for them u won't find them.

dinassours(can't spell): u hear story's about them at school by ur friends and one day ur dad takes u to a museum and u find fossils of them so u realize they are real and not fake.

i think the answer is invented words, rhyming knack, alliteration, and, metaphor.