She has provided the company with many years of 'loyal' service.
She has remained/stayed 'loyal to' her old friends.
has served 'loyally' for many years
(..) The castles committed no crimes. And we need every fortress we have for the war to come. We should give the Last Hearth and Karhold to new families, loyal families who supported us against Ramsay. Aye! The Umbers and the Karstarks have fought beside the Starks for centuries. (..)2017 TvShow: Game of Thrones Title: Dragonstone Season: 7 Episode 1