Doriath, the doom weaver.

[Hookbill the Goomba]

Maybe Doriath is sort of "jinxed" after the forced entry of Carcharoth

That’s what I mean. But what I don’t get is the fact that as soon as Turin was sent to Doriath a doom hell upon him. I think that Tolkine was trying to tell us that Doriath was, as you say, "Jinxed", it just seems strange to me. You may be right as it would seem that ever since Beren Broke through the girdle of Melian The fall of Doriath was woven, also as you said when Carcharoth broke through it caused all sorts of unpleasantness. So perhaps Melian's girdle was not so protective as they thought.