In case it's not clear... Raul is off his rocker. He's very functional, but something in him is broken from the extreme abuse and betrayal that he was subjected to.
Now we see that Victoria is also substantially broken because of the abuse that she suffered.
I normally despise the "not my fault, bad stuff happened to me" trope (looking at you, Naruto mangaka). However, environment still must be taken into account. And it's not like this mangaka has been going on a "not my fault" spree -- far from it. [I.e. in this case, the author is not overusing "because reasons".]
Side Note: The author has been raising questions of moral character and culpability recently. E.g. Raul's "heaven". E.g. crybaby noble's fat mother. Surprising that she (and he) made it into that "heaven", and then that fool of a mother, who spoiled her son rotten, dies protecting him, very clearly demonstrating true maternal love and sacrifice.
[Edits: Minor edits for grammar and clarity.]