Mrs. Holton

She is Irene Holton's mother. In the original timeline, she and her husband were kidnapped and killed by Keira Clark. After Seo Joo-Heon rescued and cured her and her husband of Relic Syndrome, she became indebted to Seo Joo-Heon and agreed to be a backer for his company. (Source: Tomb Raider King Wiki)