She (or he) is not her normal self, there must be something worrying/eating at her - very informal.
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Ivantalk"Help" seems not to have such kind of usage.You are right;thanks for your correction
you can say "help me with this" but not "help me this".
Also the article should be minded.
I would like to rewrite your title to "help me with an idiom", do you agree with me?