прямо перед выходом я получила пись

прямо перед выходом я получила письмо из офиса, и я должна была ответить. поэтому я буду позже на 15-20мин.

Результаты (английский) 1:

right before I received a letter from the Office, and I had to respond. I will therefore later on 15-20 min.

Результаты (английский) 2:

Just before leaving, I received a letter from the office, and I had to respond. so I will later 15-20min.

Результаты (английский) 3:

Just before leaving i had received a letter from the office, and I should have been to answer. So I will be at a later date 15-20min.