If the victim is cooperative, other money requests can be made as well: to pay for the ladys English lessons, to help out with rent or home repairs, to help with small medical emergencies, and so on.
If some other details match as well, there is larger chance that your lady is involved somehow after all. Is there anything else in her behavior that you feel uneasy about?
Start verifying your ladys information and biographical info, if possible. If nothing else matches your ladys information, if you checked her identity and she really exists, and there are no other troubling signs in your ladys behavior, then I would recommend continuing your correspondence, but being very observant about her behavior, in case it will start becoming more troubling in the future.
If any matches are provided, you can read through them carefully to see if it is a true match or just a coincidence.
Step 2: perform the same search using her email address, then her home address.
Step 3: if nothing helps, manually go to 5 or 6 and look through reports and photos posted there. In fact, I would estimate that over 70% of scammers ARE NOT reported online, because people who got scammed often do not know that black lists exist, or how to use them.