My son is getting married to a wonderful girl. The plan is for a large, formal wedding. I am divorced and unable to contribute much to the wedding; my ex-husband is contributing a substantial amount (paying for the flowers, liquor, etc). My son's future in-laws, who are from a different culture than ours, believe that I am not contributing enough, and therefore should not be able to invite many guests, just my immediate family. I am on a fixed income and have explained to everyone, several times, what I can and cannot afford.
Now, my son is taking his in-laws' side, is behaving in a disrespectful manner to me and not including me in any of the wedding plans. I am also aware that my son's future MIL is badmouthing me to him. I have spoken to him several times about these issues and my feelings surrounding them, to no avail. I am so distressed over this, I cannot sleep and am worried about how it will affect our relationship in the future. We have had a close relationship up until this point. Need suggestions on how to handle this situation.