&gt; Nor does she ask me permission to spend her money either<p>This indicates you have your family&#x27;s assets set up so you separate categories of money that you can exclusively spend from. Many people don&#x27;t do that and, if you don&#x27;t do that, it makes sense to ask before spending a significant amount of money from the join category.<p>&gt; Do you really think that $560 is a &quot;large amount of money&quot;<p>That is more than half what we pay for rent, so yes.