Mrs. Brown met them with loud yelling. (?)

Or screams

А нужно ли здесь meet вообще?
When they arrived, they heard Mrs Brown scream.¿¿
The first thing they heard upon their arrival was Mrs Brown's loud screaming. ¿¿

Really interesting question! :)
At a time of their arrival Mrs Brown screamed at someone. (?)

Ули, во втором they were met? У меня пазл не сходится)

Опечатка 😔

Я так и подумала.