Trude, stick with your own sisters, Chris and Yoshika. Don't try to steal anymore.

I think Wakaba turned into Trude. Wouldn't be surprise considering she been taking a liking to both Momo and Himawari the same why Trude taking a liking to her sister and Miyafuji.

The top says "After Vividred has finished airing."

Trude is saying something along the lines of, "Now that your anime has is over, would you like to be my little sister?"