Olivia faced a woman who clearly didn't like her. The woman displayed indifference and gave her sharp looks, making Olivia feel uncomfortable. Olivia realized how much she was disliked by the woman, who didn't hesitate to express her feelings.
Being in Hanzo's mansion already made her uncomfortable, especially having to meet the people inside. Although Hanzo treated Olivia very well, not everyone there liked her presence.
That woman was Tasha, who had always liked Hanzo but had been rejected because her feelings were unreciprocated. Tasha felt it was unfair, especially since Olivia's presence had completely blocked her attempts to win Hanzo over.
Various plans crossed Tasha's mind, ranging from cruel methods to clever schemes. Tasha knew she had to win Hanzo's heart by using Olivia's presence. She understood that the Alpha's decisions posed a risk to many in the mansion.