We lost mum three weeks ago and all I can advise is that you spend as much time as you can with her and tell her you love her and that she was a great mum and if you do that then the fact you have said your goodbyes and told her how much she meant to you will bring you comfort in the future.
I was in China and I was alone when my mum left us. I could see her deteriorating and dying 5000 miles away over Skype and by the time I booked my ticket home to say goodbye in person and to hug her, it was too late. She went pretty quickly from being in a reasonable condition and it was horrible to witness it without being able to do a damn thing about it.
I am 50 now and I have another 30 years or so in the damned unforgiving place - my mum always told me once she left us to be happy and that is what I am going to do although life will never be the same again, life is always going to be that bit worse than it was but my mum was in England when her parents both passed away 6000 miles away from her - she understood my situation and I am going to try and honour her wish. I am sure your mum would want you to be happy and live a productive life of however long you have got and also, you aren't on your own, there are many of us going through what you have been through and are about to go through, writing on here helps and it certainly helps me. I hope that helps anyway and take care.
