This "fact" seems to be derived from your observation that your daughter doesn't have an appreciation for counting. From that observation, you've concluded that "she mustn't like it because she's a girl". Please tell me you know how lazy this reasoning is. I'm a woman, and I never liked counting or arithmetic. Now I study electronic engineering.
the point is not a sweeping generalization about all women. the point is: statistically, a higher percentage of men like computer science/programming than women.
My experience as a parent and as a person who has learned about parenting is that these types of interests are often innate: i've seen this over and over again. For example, our daughter loved shiny things (before age 2) before any kind of social conditioning could take place.