Will the China Embassy provide a visa for my cousin,?

my father has a kidney failure and trough the internet we found ( Hauxia Kidney Disease Research Institute in China) who can provide us an alternative medicine for my father. Now my cousin contact one of the Doctor in ( Hauxia Shenbingyanjiuyuan Hospital) and said that she will be sending my us a invitation.. would it be possible that the china embassy would allow my mother and my cousin to accompany my father while he is having his treatment in china.