Thanks for your question on Health Care Magic.
I can understand your mother's situation and problem.
Colon cancer is very notorious in spread.
Liver is common site for metastasis.
And
chemotherapy with radiotherapy are the treatment of choice for this.
Since she is having recurrent liver metastasis besides treatment, better not to give her further chemotherapy and radiotherapy.
Because chemotherapy and radiotherapy, both are very toxic to the patient and having a lot of side effects like weakness,
lethargy, opportunistic infections etc.
So better not to give her further treatment.
Life expectancy in her case is less than 1 year.
Hope I have solved your query.
I will be happy to help you further.
Wishing good health to your mother.
Thanks.