<p>This is seriously not something that needs to be brought up.
Toilet paper is dirt cheap (provided you’re buying off-brand, which you should be doing anyway).</p>
<p>For all you know, she could have ibs and whenever she goes it takes a lot to clean up after.
Or maybe she’s on her period when you notice this.
Or something else awkward like that.</p>
<p>I’m seconding Bedouin- this is not a legit concern at all.</p>