Well. Since you are talking about women who gamble in a modern context, then it makes come sense many of them resort to social media to become gambler influencers or share their sport analysis. One does not think too much about why women could easily be successful within the ecosystem of gambling, actually. Most of people involved in gambling are men, if the woman who is involved in gambling as a good presence and attitude, she could easily catch the attention of those men and make them become loyal follower of her social media accounts. Specially in this era when women have more freedom to participate in all kinds of activities, like gambling, sports, working in previously men dominant jobs, etc.
Though, for now most women who wish to become influencers opt for doing the usual and share makeup tips, recipes, for become Twitch gamers, I have not yet stumbled with any girl or woman who actively shared her experiences or advices for gamblers on the internet, who knows. They may be still less than the 5% of people who influence in this ecosystem.
True but seems many women are not dependent they work their money themselves and not depending on anyone for money, a woman might be gambling because she's working and making her own money without the assistance of anyone. Social media are were people share their analysis to others so they can gain more impressions, views, likes, followers, comments many intentions as well so when they are sharing their analysis on social media many of them get paid for doing so mostly when the predictions are sure and people are confirming it.
Actually, I believe most of the renevue from all kinds of content creators out there on the internet (regardless they have anything to do with gambling or not) comes from advertisement and sponsorships. So some girl who was into gambling and predictions and sharing her analysis in social media will get offers from advertisers and sponsors as soon as some threshold is reached by her viewer counter or subscriber counter.
I have got a friend who started to make YouTube videos and as soon as managed to become popular enough sponsors contacted him. His channel does not have anything to do with gambling though, but I assume it is not that different for gamblers who create content.
Also, you should not underestimate women, even though it is true many of them are not completely independent and many of them are not into gambling either, that does not mean some of them some of them have not managed to become successful gambling content creators on the internet. For now, most of them seem to prefer to become OnlyFans models, since it is easier.