It strikes me as a complex accident, perhaps avoidable if the council had thought through whether it was a safe shared space or not, perhaps avoidable if AG had moved out the way, perhaps avoidable if the poor victim had got off her bike.
Most of us have had times in our life where we've thought 'phew, I made a bad decision there, a few more seconds and it would've had a very different outcome'.
If the victim had not died, she may have been one of those people, we just don't know.
AG was a vulnerable adult and was wrong in her actions but I don't believe it's proven she pushed anyone and I do believe she may have been fearful of people cycling towards her. The victim might have wobbled whoever she passed. We just don't know. A perfect storm of poor path, older cyclist, vulnerable adult. But I don't think it met the criteria for manslaughter.
And AG has spent a year in jail. Not enough if you think she pushed her, but arguably too much if there was never a case. Maybe it's the right balance.