As you know this is a very sad situation. She has added an addiction to her many problems. I am not addicted to gambling but I do know people that are and I myself am a recovering drug addict. 3 1/2 years. If Your friend has admitted she has a gambling problem (first step toward recovery is to admit you have a problem) and will seek help with gamblers Anonoymous then get her right over there. i can relate to the money disappearing, I have seen people lose everything gambling. They always think they will win, if they play once more. But she can not let her guilt feelings, keep her from going to Gamblers Anonoymous. In her mind she will justify her continual gambling. If she feels guilty and gambles the guilt will build and build. It may sound strange but since she is already gambling and feeling guilty the addict behavior says, well, I already feel terrible so why not do it again. If she is having loss of memory
that could all be due to guilt! If going to the group does not start to show some results in that area, then possibly the Doctor here can suggest something. But many of us are good at erasing what we dont want to remember. Good luck