If you run for office, the opposition will go over your financial statements with a fine tooth comb.  If anything is out of line it will be pointed out to the press.  The media does not have to dig the dirt themselves, it will be handed to them (gift wrapped).  

I would suspect this how this came out.

But that does not excuse her for violating the law.  

It is also a disservice to your supporters that donated this money to your campaign, to use the money for personal expenses.