I definitely need more context to give you an accurate answer, but I'll break down my educated guess as follows:

مشاوير comes from مشوار which typically refers to an errand. مشوار طويل can mean something like a 'long journey' too, though.
اروح means 'I go' in colloquial Arabic, and at least in Egyptian, saying اروحلها means I'll go see her / I'll go to [a place].
My best guess is that the mother is saying that, if you have errands to do / if there are errands, I will go see such and such a person / I will go there (wherever that may be).

Being able to see the sentence that came before this would help a lot, though, because the meaning will depend on whatever came before/after. Please add more context if you get the chance!