Some steps you could take at home to help reduce the "urge".

Put in a proxy and have her web requests blocked from gambling. You'll have to review the logs to make sure that they are being blocked. Or, you can drop them at the firewall... if you know what sites she is going to. If you are using dial up... put entries in her hosts file...

www.somesite.com 127.0.0.1

So it will refer her to her own computer when she tries to visit the site.
There are so many of them out there though... so good luck.

You can also put something like Norton Internet Security and put on parental control.
You can block the sites she visits based on content. It works very well. That'd be funny though... putting "parental control" on your parent.... lol Just make sure you choose a strong password so she can't disable/uninstall it.

Like others have said... she can go elsewhere to gamble. But it'll make it more of a pain for her and she may not be comfortable going to a internet cafe to gamble.

She needs professional help. You can only do so much. She needs to want to help herself. If she doesn't want to stop... then she won't stop. gambling is a serious problem. I've gone to the race track (they have slots there) and see the people in there. Most of them are not only addicted to the slots... but also to alcohol, and nicotine.

If she has lost so much $$ already... she might not be able to stop because she HAS to win it back. But in the process, she just puts herself deeper in the hole. The deeper she gets, the more she has to play. Just because she might be able to get herself out of it.

My mom has a new habit of playing the online slots. She is on them constantly! But she is playing the slots that are free. www.freeslots.com Hopefully it doesn't become more serious and she doesn't start paying to play. Seeing that there are real slots only a couple miles from my house... I find that unlikely. I've found several ways to "cheat" that site... too bad its not real. I could be a thousandaire right now.

I can understand how addicting it can be though. I took $50 to the slots a couple months ago. I won $250 in the first 10 minutes I was there... Don't you know that I lost it all too. I put it right back in the machines. I left there with the $50 that I came with. It was fun... but just a waste of time.