You might be missing the possibility of overload with signals that strong.
With transmitters that close we need to see a report that is more accurate than block level.
Your report says
WARNING:
Address was only resolved to block level and might not be that close to your actual location. For more accurate results, try entering a specific address or coordinates.
WITI has a Noise Margin of 80.5 dB (outside) even before adding the antenna gain.
Interpreting Noise Margin in the TV Fool Report
http://www.aa6g.org/DTV/Reception/tvfool_nm.html
Jake V is correct, try different locations for the attic antenna.
RCA ANT751 or GE Attic antenna 34792.
https://www.youtube.com/watch?v=1qYu...A&noredirect=1
The signals might not be as strong as listed on the report. When you are that close to the transmitter, the strongest part of the transmitted beam could be well above her location.
There are also some very strong local FM signals, but they usually affect VHF signals before they affect UHF signals. It might be worth the effort to try an attenuator in the coax line.
http://www.fmfool.com/modeling/tmp/1...a/Radar-FM.png