Dictionary / Vocabulary / 家出
いえで
running away from home; elopement; outing; going out
JLPT N1 common word
舞が家出を敢行する、直前のことだろう。
That was probably just before Mai took the drastic step of leaving home.
彼女は持ち物全部を持って家出した。
She left home bag and baggage.
彼は両親の知らない内に家出をした。
He ran away from home without the knowledge of his parents.