Lady Ethereal is one of the nicer and more softspoken members of the sols. As Yi first meets her in game she seems unaturally blissful and welcoming to him, however, further conversations with Yi have her switching between this confused state and spiraling into insanity as she blames herself for failures of the soulscape system which drove her team, including her lover, to insanity and eventually death. This culminates in her eventually redirecting her anger at herself towards Yi and the rest of the sols. 

https://drive.google.com/drive/folders/1DvZMmUgJCP1hiI2TQYU1p8cziIQYSS3c

Line Context and Tone: 

Line 1: The madness caused by her systems' failures and her being forcibly kept alive causes Lady Ethereal enough stress that it seems to also impact her memory. In her blissful state upon entering her zone, she seems to recognize Yi yet can't quite remember who he is. She should sound extremely unfocused and confused yet also uncannily happy.

Line 2: At the turning point of the soulscape, Yi comes across Lady Ethereal again as she starts to break down as she apologizes again and again for causing the loss of her team, directing her anger entirely at herself. She does recognize Yi but this doesn't help at all. The bliss should be gone as she gets more crazy and angrier at herself, literally asking Yi to hit her in the same conversation.

Line 3: After Yi gets kicked out and reenters Lady Ethereal's soulscape, he talks with her one more time before her boss battle begins. Though Lady Ethereal is much more coherent than in her soulscape the first time, she's no less angry and unstable, directing all her anger, justified or not, at Yi. She should no longer sound crazed but rather sad before quickly transitioning to extreme anger.