Both these ladies developed diabetes at the age of 48 years.
Type 1 in older patients
A study Danish adults over the age of 30 has found an incidence rate of type 1 diabetes of 8.2 cases/100,000/year.
This rate is lower than that found in Danish children (21.5 cases/100,000/year)
Assuming that all type 1 diabetes is incident in children might lead to an underestimation the incidence of type 1 diabetes in the population as a whole.
Gender
With the exception of one study from America, no difference in incidence of type 1 diabetes in children has been observed between males and females.