Saya very suddenly becomes your tutor and you end up feeling very comfortable around her because she's so nice and positive. Saya also seems very happy that she's able to help someone out.
I'll repay you for this eventually.
سأردّ لك الجميل في نهاية المطاف
Ich werd mich dafür erkenntlich zeigen.
Je te revaudrai ça une autre fois…
Ricambierò appena possibile.
Assim que puder, venho 
para me desculpar direito.
Я как можно скорее отплачу тебе за это.