On your phone you can long press her pictures and than select "open images to new tab". Copy that url and paste it onto google or tineye. If that doesn't work, politely ask her to send you full body pic (no face) of her with some kind of proof (Paper with her full name and number on it or a gesture of your choice). If she makes excuses, simply move on. Learn to move on if she refuses. Chances are she is probably fake and you both will save time by moving on.
