>>1786471She is a little off in those notes, but in that example specifically she's reading the lyrics as she sings so she's focusing on that. she's not even a half step off though so most people won't notice.
Her timbre during that stream was a little more nasally than usual, I couldn't tell you why though.
But the "mistakes" are minimal for an impromptu, viewer requested song during a karaoke.
And of course, she SHOULD get a coach, every holo should get a vocal coach and it baffles me that most of then still don't have one as
>>1786667 said.
With all that said, the comparison against Suisei and Towa is a bit weird when they make the same mistakes. All three have their strong points, of course.
Suisei is more consistent than Towa, but you can still find those mistakes if you nitpick.
Her strong point is the strength of her voice, and most of her "mistakes" are in the higher registers
https://www.youtube.com/watch?v=UciPumOwnysI want to forgive her here because it's a concert so she was probably extra nervous. And again, it's minimal.
With Towa it's way more noticeable, she really needs to work on her control.
https://youtu.be/w1vDBtKSaRE?t=630 
