OP, I'm not going to accuse you of lying in your story, but sorry, from what you're describing I don't see it for real-life correlation.
everyone can easily find Bitcoin vendors with the search engine on their smartphone. asking others for help seems unreasonable unless you are close friends with the woman you mean.

but regarding your loss, was it the vendor you referred to your female friend who scammed you? That means there is a possibility that your woman's money is also missing.
but everything still doesn't make sense.