I would make sure that she knew she was responsible for letting the repairman in.

The guy cut the stucco poorly enough to get a few giggles out of the stucco repairman.

Absorb this additional cost of the appliance repair man and this oven issue, and then it's time for you to be ready to have a direct conversation with him. 

I have an addendum that states if filters are clogged when ac repairman is called, they are responsible for the bill.

I just got bit by an old friend of the past called "repair man called with time window and doesn't show up".

When we first got into buy and hold years ago, my husband couldn't stand going over after work to fix something, but he also got upset if I called a repairman because it would cost more.  

We're managing things for now and as we need people to go to the house or be there for a repair man we're hoping family will help out.

I manage both our SFH properties and while most of the time it is very hands off (depositing rent checks), when something does come up it can be a scramble trying to balance the job with trying to find a repairman (or make the repair myself), coordinate with the tenants, and go out to the property to insure everything is completed, especially when I am traveling.

When something needed to be fixed, he would call the repair man and deduct it from his rent.

I'll confess that my level of sympathy is pretty slim when an air conditioner has broken in the heat of summer, and it will be 2 days before the repairman can get there.