When I took my eyes off her for just a minute with 目を離す

Idiom Explanation: Averting one's attention with 目を離す

Satsuki leaves Sara, the young girl she’s watching, alone to go heat up lunch. When she returns with the food, Sara is nowhere to be found. Satsuki calls her sister to let her know what’s happened.

皐(さつき):: 「それが…　ちょっと目(め)を離(はな)した隙(すき)に…」; "The thing is, I took my eyes off her for a just a minute..."; 「これから警察(けいさつ)に連絡(れんらく)して探(さが)しに出(で)るから…」; "I'm going to call the police, then I'm heading out to look for her..."