The fracking question is debatable and is at the heart of this issue.  You can establish gas origin using stable isotope analysis, the same science that gives us data for climate science.  In Alberta there is plenty of shallow, biogenic gas and it shows up in shallow wells after decades of use due to aquifer pressure reduction.  The biogenic gas has a distinct isotopic signature from the thermal gas.  If this woman had any evidence of thermal gas in her well, AER would have stepped in, investigated fully and held Encana accountable for their role.
The fact that it has gone so far indicates to me that she is pursuing this case out of obstinance and ignorance.