Just a few other general expenses to consider: FCC Lawyer retainer and fees, State (Oregon B&O State tax is a b*tch) Federal Taxes, Transmitter Site Lease, annual tower maintenance, phone and Internet, building and land maintenance (mow/maintain the land around the building and towers), marketing costs (newspaper ads, billboards, signage), Insurance, ASCAP/BMI fees, FCC regulatory fees, sales commission(s). I could go on, but you get the idea.
I'd say that my list above would easily eat up your $10K and then some. A pre-2008 example from my experience from just one Class A FM station that I'm very familiar with:
Market: Central Washington State
Population inside city grade signal: 36,000
Number of radio signals inside station coverage: 8-10
Format: Classic Hits (WW1 Satellite-programmed)
Best Revenue month: $14K
Average Revenue month: $8K
Average Revenue after 2008 Crash: $4-6K per month
Now also consider KDUN is an AM station..
That's what this boils down to. This is a hobby/project/labor of love, not a viable business. Even if she's Delilah, this station will run in the red. But that's okay. She's got the money and the interest. Why not play radio owner for a year or two? Chances are the money pit syndrome will get old, and she will either move up to FM stations, or cut bait and stay with being a syndicated host.