Translation of "behind" into Kinyarwanda

I vividly recall a young schoolgirl who stood behind her mother at the door, listening to the message.

Ndibuka neza agakobwa k’akanyeshuri kari gahagaze mu muryango inyuma ya nyina, kumva ubwo butumwa.

I saw him for the last time as the prison door closed behind him.

Namubonye bwa nyuma igihe inzugi za gereza zafungwaga amaze kwinjiramo!