yeah... here in NZ we tend to have limited categories too - and this is because fewer women compete.
For instance, in the Club Champs TT earlier in the year I was first in my age category - but only because I was the only woman in my cat to enter.
Out of about 10-12 vet women (women over 35) I was 3rd....
At the Nationals a month or so ago, the same thing happened, because only about 8 vet women entered, they were all started together...
We just need to get more women on bikes believing that they CAN race...