((((Paddy)))) Her country turned you down for disability, didn't they? Will she be willling to pay for you and the treatment you need and the possibility that something else might happen that means that you would need to rely on financial help? Of course, not. She has no right, with the pension that many western Europeans get and the other siblings in the area, to hit you up for money. If your partner wants to give her money, that's up to hm, it's his mom, poor man. You should not have to fund her slush account. There is a difference between being selfish and doing what you have to in order to protect yourself. Otherwise, she will suck you dry and move on, and you and your partner will have to bear that burden.
I'm sorry, harsh words. I just hate to see someone playing on your wish to be decent and generous in order to live the good life at you cost. Huggs dear.