Day of the sammer solstice (quarrel sisters) past 10

When the pony came to the door, she knocked, but no one answered. But after a couple of minutes she heard hooves pounding on the floor. Soon Comet heard a small, barely audible voice.
Who is there?... - asked a small voice.
My name is Comet Sentry. - said the pony.
Ah Comet, yes yes - the pony left the house, and Comet saw a cute pony with red eyes and a straight mane.
Good afternoon, my name is Kvitkovy M. butterfly, I am very glad to meet you, said the pony quietly.
Yes, hello, it's nice to meet you, I have to check how the birds sing, they should perform on the day of the summer solstice for our guests.
Oh, yes, of course, - after that Butterfly flew up to a big tree and called the birds. When the birds flew in, Comet continued.
Tell me, please, how the birds sing.
Can we go out and just sing?...
Um, well.
The birds began to sing and Comet was constantly writing something down in a letter. After ten minutes she asked them to stop.
Birds sing very well, feed them well and do rehearsals so that they sing well on the holiday. - Komet enumerated.
Good, yes, very good.
Is that all? can i go or something
Er, can I ask a question?....
Um, of course, what are you interested in?
I wanted to ask, will your sister be the princess on the day of the summer solstice?
Comet was silent for a second and then answered:
I won't be a princess...I...- said the pony quietly but firmly.
And d. good, v. congratulations.
Thank you - said Comet just as coldly.
I hope you will be a wonderful princess, just like your mother... said Butterfly.
Me too, bye, I have to go.
After saying goodbye to the pony, she went on to check the preparations for the summer solstice.