It is not her personal wealth to start with. It is the taxpayer's money. The European Union has already agreed to provide some 20 billion to Turkey, so that they could take care of the immigrants. In addition to this they are spending a similar amount to take care of the immigrants inside the EU. She is wasting the taxpayer's money. The Saudis and the Americans must be made to pay, as they are the main players behind the Syrian civil war.
one of the reasons for tax money spending is to handle these big things that is too expensive for few people alone. compromises are necessity, naturally. spending a few billion euros to save a few million people in need is reasonable imo.