These directions strike me as seriously flawed. I'm surprised she is only
appealing her sentence and not her conviction. As people have already noted, you need three elements for unlawful act manslaughter:
(1) an unlawful act
(2) that is dangerous
(3) and causes the death
The route to verdict instructions are fine on (2). There is no mention of (3) which strikes me as bad, but not necessarily giving rise to an unsafe verdict because causation is fairly clear cut here. What is most alarming is that there is no identification of (1) - what the unlawful act is supposed to be here. As far as I can tell that are two potentially plausible offences:
(1) assault
and
(2) battery
Battery requires the application of unlawful force. It is not at all clear to me that Grey even touched the victim so the more likely option is assault, which requires causing the victim to fear immediate unlawful force. It is far from clear that the cyclist did fear the application of force, but even if she did that would not suffice. It would also need to be shown that grey intended or was reckless as to causing her to fear immediate unlawful force. This seems even less likely to me. It seems more likely that she was gesturing at her to get her off the pavement not make her fear violence.
At any rate, leaving speculation aside, the main issue is none of this is in the judge's guidance to the jury. Some glaring omissions. It seems far from a safe conviction.