Alternative Cancer Treatments Abroad

I am writing this on behalf of my mother. I am looking for advice and information regarding alternative cancer treatments abroad. My mother has come to the end of her Chemotherapy and unfortunately Radiology is not an option due the size of the tumour (although the tumour has decreased by two thirds from the original scan last year). The treatment received in Ireland has been fantastic but it looks like we have come to the end of the road in terms of future treatment besides the possibility of further Chemotherapy in the future.

Any advice would be very gratefully received, especially information regarding alternative and complimentary treatment in Scandinavia.