waltz off (with someone)

Translations
танцевать вальс (с кем-то)
She waltzed off with him at the party last night.
Она танцевала с ним вальс на вечеринке прошлой ночью.
Definitions
To leave or depart in a carefree, confident, or casual manner, often accompanied by someone else. It can also mean to take something or someone easily or without much effort, sometimes implying a sense of triumph or nonchalance.