That is one of the big reasons why there may be an appeal and why it might be successful - there are at least two incidents in the past thirty years of statistically significant excess deaths of babies (Bristol and East Kent), and in both cases investigations found neglect and other issues caused the deaths of babies that need not have died if they had been treated elsewhere (or to the standard that was expected). There are also other cases (East Staffs being the most notorious) of it happening to adults too, and it isn't unknown for the NHS to horrifically mistreat individual staff members either (for example the consultant who blew the whistle on what was happening in Bristol had to leave the country because he was unemployable here).
Once you point out that its possible for this sort of thing to happen without a malicious individual at the heart of it all, then it comes down to the other evidence in the case - and whilst (as @PhilM listed above) there is some, that is not a lot with which to defend a whole life tarriff.
There are ongoing investigations at hospitals that she did placements at, Liverpool Womens being one of them.
If anything similar turns up there, I can see her being charged with more offences tbh.