Artist's comments:

フ｢あんたもお姉様も、私なんか居なくなればいいと思ってるんだっ｣
美｢そんなことはありませんよ｣
フ｢あんたなんか嫌いっ　お姉様も嫌いっ　みんなみんな大っ嫌い！｣
美｢そうですか？　でも……｣

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Flandre: You people, my sister and you, must be thinking that it would be better if I am not existed, right?

Meiling: It never happens.

Flandre: I hate you, I hate my sister, I hate everyone!

Meiling: Is that so? But...

Thank you frank

Now I wonder this seems like it could be heart warming more so than heart breaking now

I kinda feel it leans on Heart Breaking.

Looking at Meiling's wounds and blood kinda much tells me she went berserk (worst case on my head is if she actually killed someone on SDM)