Found another way to spot a scammer because of this one.
Save the number in your contacts
Download Telegram if you don’t already use it (it’s a messaging app)
See if they are there (“she” joined the other day, when a contact of yours joins you get notified)
“Her” contact has a profile pic of a guy and the bio/username looks like a Russian name
To add to abqspencer's post...I use "TinEye" photo comparison add on for Firefox. It searches a lot of photos so you can decide if it's "live or Memorex"... It doesn't always find source photos, but couple that with reading the profile and you can make an informed decision.