If it was indeed her request to route direct AVINA then she should at least have been aware of the MSA and terrain she would be flying over, as should any jockey, of any equipment, flying in Kenya, at any time.
There are regular periods of bad weather in the year, unprecedent rain’s this year, known areas of high ground. Basic airmanship and terrain/situational awareness are the very minimum requirements to sit in the cockpit just for solo flight, let alone commercial operations.
Have just seen a video of the wreckage taken from the air, and that is very jagged high ground. It looks quite likely that she was IMC to have flown into the impact point as they did.
Very sad for all concerned. Yet another CFIT that should never have happened.