I’m sorry you feel hurt OP. Unfortunately you have found out that your MIL is not very nice. She is not a warm, nurturing person who is happy her DC is loved and cared for. This comes from a place of jealousy. It’s not personal.
My MIL was the same. Was, as in I no longer deal with her. Once she was staying with us and she told me, “DIL’s, who’d have them. The problem with sons is that you have to put up with whoever they marry”. This is 1 out of a thousand things she’s said. Her DD, my SIL, another nightmare, has in the past told people I’ve got MH issues, which is news to me 😏My MIL too thinks I am a gold digger, lazy arse, non family blah blah.
My MiL is a very silly cow. “I” was the one who arranged all cards, presents, meals out and at my place, Christmas stay overs, days out, weekends away, holidays together that often came out of my salary. “I” am the only person (+ DH) to give her the oh so cherished DGC, she has no other. She has been awful to me. When I have had very bad times in my life she kicked me when I was down.
I will never, ever, forgive her for treating me like dirt on her shoe.
Now I do NOTHING for her, and her own DD’s were on the phone to my DH whinging that she doesn’t want to do things for her mum.
Don’t waste anymore time on this. She’s liberated you. You do not have to do anything for her, because she doesn’t like you, so she wouldn’t want to owe you anything, right?
I think my MIL regrets her behaviour and favouring her other DC over my DH. I’ve seen snippets of remorse and teeny bits of effort with me recently, but I want nothing from her. I’ll accept a cup of tea off her, but no more. In the last couple of years, after 26 years of nothing, she’s asked me what I want for Christmas and I tell her to her face “oh, no. Please don’t buy me anything. I don’t want anything off you”. She looks hurt but I don’t care. If I was stuck in a room with a tiger and her, I’d go stroke the tiger and hope they’d protect me.