This is a real life phenomena, though. In the first fifteen seconds of the average joe meeting someone, they've developed a predetermined notion as to that person's character by how they look, speak, sound, dress, and carry themselves. Visually impaired individuals have about half of that taken out of the equation. Scent may be a strong factor as well as vocal tones, but lets not forget that speech patterns and personality itself play a large role, as well. I was rather pleased with the author's interpretation and didn't think it unrealistic.
If we're to understand that while the MC considers their powers a boone yet has identity issues, or insecurities regarding their body and its changes, then someone like Weaver instantly negates about half of their worries, and puts them on what they, the MC, feel is a level playing field. The MC even makes mention of being afraid that if she's not accepted by Weaver, then its because their personality is the problem, not their looks.
And given that I'm not blind myself, here's a quick jaunt into youtube for reference.