After being seriously injured by the Nephilim, Hibiki is unable to control her Symphogear.  She flies into a rage, destroying the Nephilim and ripping out its heart.  During the post-fight medical exam, it's discovered that if she continues to use her gear, she'll die.
This is what happens the minute you relax.
هذا ما يحدثُ في لحظةِ الاسترخاء
So was passiert,
wenn man sich mal kurz ausruht.
Eso pasa apenas te relajas.
Cosas que pasan cuando te relajas.
C’est la preuve
que je suis rassurée.
Ecco cosa succede
appena ti tranquillizzi un attimo.
Isso é o que acontece assim 
que me sinto mais tranquila.