"Even by those who ought to give her praise"

(Canto 7, line 92)

Perhaps alluding to a passage in Boethius' "Consolation of Philosophy": "The very thing which is now the cause of thy great grief ought to have brought thee tranquillity. Thou hast been forsaken by one of whom no one can be sure that she will not forsake him." The meaning would then be that people abandoned by the Lady Fortune are thereby exempted from painful vacillations between hope and despair and should therefore praise her, not "crucify" her.