BBC article on cycling accidents

You can't tell anything about whether women or men are more likely to die under HGVs unless you know roughly how many women and men didn't die.
Put another way you need to know how many cyclists out there are men and how many are women. No one has really good data on this, guesses range between 25%-35% women cycling in London, less in the rest of the country.

Different studies have shown women account for between 25% and 33% of cyclist fatalities in London - roughly in line with the numbers out there. However when looking at types of fatal crashes women seem to be involved in around a half of HGV related deaths and a much smaller proportion of non-HGV related deaths. Studies from Germany show a similar disproportionality as does anecdotal evidence from other places.

The way it adds up women are much less likely than men to be killed by a car and slightly more likely to be killed by HGVs. To be honest I have no idea why this is so. One suggestion is that women are smaller than men and so are more vulnerable to inattentive lorry drivers; that doesn't explain why they seem to be much less at risk from car collisions.