Ok. I've read the original post. I still don't see your point. It's NOT the Realtor's job to do minor maintenance to the house. It's the Realtor's job to list the house, show the house, hopefully sell the house and be at the closing. Exactly.
Bottom line: it's your house. Do you want it sold or not? The realtor loses nothing except a potential commission if it sells. You, OTOH, have to keep paying out of pocket for upkeep, taxes, insurance, repairs, I'm not sure if you have a mortgage on it so there's that, heating, electric, water, etc.
If you're going to tell the realtor that you're miffed because she didn't change the batteries in YOUR house (not her house, YOUR house) and that's why you're dropping her as a representative, I'd be willing to bet she's probably going to be just as relieved as you are when your contract is up and you're going with someone else.
I'm just sayin'.
Hire a property management company if it's too long of a drive for your dad to do these things.