The British judicial system is, compared to for example quite a few states in the US, incredibly lenient. Life without parole is ridiculously rare regardless. She needs to get life without parole.

Look at her fFs! Butter wouldn't melt. She looks like a textbook dedicated vocational nurse in it for the goodness of humanity hiding in plain sight like Shipman, who did get a whole life tariff but absurdly could still have gained early release on certain grounds. There has to be certain circumstances where beyond a shadow of a doubt legally there is ZERO chance of these monsters ever breathing free air again. Anything less is at this point just plain fucking weird.