Ren is haunted by the deaths of his party members in a failed attempt to defeat the Spirit Tortoise, and doesn't want to believe that he might be responsible for what happened.  Myne seems ready to take his side and support him, but...
I could get by fine on 
my own if I wanted to!
!كان بوسعي أن أتدبّر نفسي بنفسي لو أردتُ ذلك
Ich komme doch allein klar.
Je peux pourtant
très bien vivre tout seul.
Potrei cavarmela benissimo da solo...
Eu consigo viver sozinho!
Да я и один…
прекрасно со всем справлюсь!