We had been married for 3 years and had at last been allocated a brand new Council maisonette when we decided that it was time to start a family. One evening my unmarried, still living at home, older sister turned up to ask me to accompany her while she told our parents that she was pregnant to her long term boyfriend. I did and made all the right noises, but secretly was raging that she had stolen my thunder by producing the first Grandchild in the family. She married quickly and her baby was born 3 months before mine.
When we visited MIL + FIL to tell them we were expecting, MIL wept buckets of relief and told us that she thought I must be barren as it had taken so long!!! She was over the moon, especially because Baby was a girl, because DH was an only child and MIL announced to all that HER girl had arrived at last. She went way over the top - moving furniture around in my house, changing the cot bedding to items she had bought and most annoyingly substituting her own pink hand knitted clothes and shawl for the the gender neutral items I had chosen with such care and packed in a bag ready for bringing baby home. I arrived home to find her 'in charge in MY house. DH having been sent to get his father and bring him there for his Tea. Anticipating their arrival, she ordered me upstairs to feed baby (who was asleep) as I could not be seen breast feeding by the men. And so it went on.
3 years later, I had DD2 and MIL announced that my parents could have her. She was miffed that DD2 had been given my maiden surname as a middle name. For the rest of her life MIL treated the 2 girls differently, though FIL doted on the younger one.
Sorry to have gone on for so long, but it has been cathartic to write it all down.