Garycrambs I have no experience on this but you do sound concern for your friend. If you really think she is in distress with her husband you can probably advise her to save up her salary so she can stabilise herself in philippines in case they have divorce.Like maybe put a little business their. Your friend sound very hard working so she handle this. As for yourself weigh the pros and cons of the situation before you commit yourself into anything.
I do hope you take on board all the advices......All the best!!!!