Bible Discussion Thread

I have a son who's been married for almost 20 years with our 3 wonderful grandchildren. My son was just told by the wife, our daughter-in-law that she's leaving him. My son has provided her s great home in the country. My daughter-in-law had the band surgery a while back which caused her to go wacko is the only way I can describe it. She does not associate herself with adults at all, only young teens. My son has given her no reason at all for her to leave her children and my son behind, in fact she admits its all her fault. My son is feeling like its wrong for him to give her a divorce. My comment is a question and a prayer request. Would my son be in error if he does give her a divorce. If you can, please provide some scripture and reference versed. Thank you for your comments.