Playing the "man-in-middle" between a scammer and the victim, and trying to convince the victim that he is one after months of grooming and constant attention brainwashing is not easy. By now he has instructed her to ignore everyone who tells her he is not "4real" and told her that "they are just trying to ruin our relationship." He has probably told her he will "pay her back," as soon as all the many "disasters with his overseas business is over," among all the other lies he has told. It is much easier to convince a victim that comes here directly, than a relative for friend.
The first step in the process is getting as many scammer details as you can from her that we can check and prove to her that he is a scammer. We need his email addresses used, websites of his he mentioned, his profile links online (linkedin, Facebook, viber, etc.,) sample emails from him especially the first few where he tells his "story," and any emails where he asks for money. We need any pictures he sent to her, documents, IDs, other attachments in emails. The scammer's phone number(s) used.
Once we get that posted here, we can start the checks and hopefully have enough information to convince her, if she will even seriously look at it, which is sometimes the most difficult part.
Anytime anyone asks for money online for any reason whatsoever, they are ALWAYS a scammer, 100%. Real people never ask for money online, only scammers do.
Please try and get as much of the information I asked for above and post it here, and we will go from there.