I don't think the first "ya" comes from "iya" (aka no), more likely it was a stutter she made out of fear, aka "O-On second though,...". Though it wouldn't affect the text that much even if you change this, so it can stay IMO.
Ah... P-chan...?Why are you here...?Miku was doing a special category training now... Yup... It's late already, so I'll be going back now, right."Today's is a specially hand-picked amazing one, so I want many people to see it", she said?If I purrformed it indoors, it would be too noisy and might get in the way of Koume and her friends watching the movie. So I thought "I didn't want to be a nuisance..."...No.
Cinderella Girls Theater
ๅๅ ด็ฌฌ544ใใใใฏใ้ใใใใใใใชใใซใ๏ผใ
Theater Episode 544 - It's not like I ran away, nya!Huh? Koume and the others are still looking for more people to watch together?On second thought, I think I should continue my special training here a little meowre...