The hard part is over.
I'm matching you with one of our specialists who will be calling you in the next few minutes.
I was going to say, if you think it is really the cost, to buy at Costco or Sams, and tell her that her insurance pays for them, and there's no cost to you. That might make her feel better about using a disposable.
Sounds like she's had a little change in her congnition.