Westcott is Artemisia's boss. However, the full extent of their relationship beyond this is unknown.
They are really good friends. With Artemisia's efforts, she was able to find friends in her platoon. Ashley looks up at her as a valuable comrade and friend.
Artemesia and Origami met during the events of Date AST Like. Although brief, they ended in good terms with one another despite the confrontation of the AST and SSS.
However, in the new timeline, they are on opposing sides. Artemesia, having suffered a complete alteration of her memories, has no recollection of her previous life experiences and does not remember both her former colleagues and Origami.