Refusing To Come Back

I married in 2016, this year I have a baby boy now my wife went to father home after that she is refusing to return back to my home , she gives silly reasons for not working that I should leave alone not to take care of parent's (both my parents are bp and sugar patients) I can't leave them too alone . I am ok to give divorce to her . Note: I married my cousin ( my mother younger brother daughter . I read this marriage is void .please advise