Don't Do It!
This woman is a troublemaker. The aircraft did not crash because the engine failed. The aircraft crashed because the pilot was flying in very bad weather--very low ceiling and very poor visibility. All the evidence from the wreckage supports this. The TSB does not recover wreckage. That is the responsibility of the insurer or the owner if there is no insurance. It is not the responsibility of the TSB to recover the engine in order to prove it did not fail. There is already enough evidence from the wreckage which has been recovered to conclude the cause of the crash was flight into well below VFR weather conditions, not an engine failure.