Ask a few simple chatty questions. Things about her house, her job, her pets. Don't overdo it or this will look like an interrogation instead of a "getting to know you" type conversation. Two or three questions a day for about a week will give you plenty of details, and may show some inconsistencies too.
Now that you've got this info, ask her to send you some specific pics. Can you send me a pic of you with your puppy? Can I get a pic of you in front of your house with a big smile? See if she delays or makes excuses.
Their lies and stories are really funny. If it just wasn't so sad.
I once asked one of their "account managers", who is the owner of their broker company. She answered: The government.
Maybe there is more truth in that as it seems at first glance.