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
(..) That can march and fight? . The rest are children and old people. You're the son of the last true Warden of the North. Northern families are loyal. They'll fight for you if you ask. A monster has taken our home and our brother. We have to go back to Winterfell and save them both. (..)2016 TvShow: Game of Thrones Title: Book of the Stranger Season: 6 Episode 4
(..) _ - Do not use me for your lies. - Those men respect you. They respect me because they know who I am. - They know I am loyal. - As do I. I am loyal to my queen, not you. If you betray her work, you are my enemy. I am not betraying her work. I (..)2016 TvShow: Game of Thrones Title: Book of the Stranger Season: 6 Episode 4