Hi Mark
Well good on you for posting, and Welcome to the site. First of all I am sure you have read other posts I am a wife of a gambler, So I understand the need to help your mother through this dreadful addiction.
I Live in Australia, I did a google search the only number I was able to find was 0800 006 008. it is the number for
The National Responsible Gambling Programme, which seems to be for Kuala Lumpur, and this link
www.sapo.co.za/ccpa/venue.htm it is from the Sun International Casino, it has a link there to gambling help, hopefully it will help you. or at least put you in the right direction.
Also I do not know if your mother would be open to posting but I truthfully have found this site very useful, and well the joys of the internet it does not matter which country you live in. and it will be a long road for her, and even for yourself so posting for you may also help, because the effects of gambling for both the gambler and there loved ones can be very emotional one, and I personally have found the strength I get from this site amazing, sounds silly but gambling is a very hard thing to talk about with friends because peoples reaction can be anything from understanding to total disgust, so to have a place where you can go and people understand is a necessity, for your own well being, and your mothers perhaps if she is a little nervous and uncertain, being totally anonymous on this site may help. She sounds very brave actually telling you because I think that is the hardest bit for them to come to terms with admitting to them selves they have a problem and wanting to get help.
Good luck and I hope the above link and number is of some help to you and your mother. I hope you keep posting and let us know how it is going.
Take Care