How to use "companion" in a sentence

Her companion as usual was M

"It's fantastic," Eleanor says, and again Carolina is very happy to have a new companion.

Yes, a lovely, new companion, she thinks as she leaves.

I hated my life with Mrs Van Hopper, but she paid me a little money to be her companion

When he saw me, he would smile and say, 'Well, how is the companion this morning? Where would you like to go?'

How could he love me, after her? I would be a companion for him

Fear nothing! No one will follow you or your lovely companion if you leave us in peace