The joke's on me!
A few days ago I asked "My mother has taken against my partner, how can I explain that we are getting married soon?" and was advised to keep it secret to avoid my happiness being ruined by her usual terribly cruel remarks and bizarre accusations against a very kind and loving man who has done his best to help her. One of the best is "he makes you hang out your laundry in the rain"
Although tempted not to say anything I finally just told her, having obsessed and worried myself into exhaustion. And guess what, she's delighted, of course she will come to the wedding, she wants to help out as much as possible, she wants to meet her new family etc. I can't even feel relieved I'm so stunned.
BUT now I have to be careful, as she has turned in the opposite direction before, so next time we speak it could be back to hate and spite and go back to your ex-husband.....