Once my lovely adopted mother died when I was 11 the heart went out of the family. The 'feeling' of those years, looking back, was empty and cold.
My adoptive father tried his best at that point, but he's an authoritarian and emotionally very weak man unable to provide any guidance and only a tiny bit of support. Admittedly I was angry with him for mum dying, which is deeply irrational.
Then he married his second wife and that was that. I was actively unwanted instead of a responsibility he didn't know what to do with. I was moved into being a scapegoat that he wanted to think badly of, I think to assuage his own guilt. It was bloody awful. Someone took me in after 18 months (bless them) and we've had only a very faint relationship since. He's never met his second grandson.
I miss my mum bitterly, still. Her and her love and warmth. I don't think it will ever stop. I also miss her guidance in the teen years so much.
MiriAmmerman I'm so sorry.
You will leave an imprint yes, and that will stay with him lifelong. I've looked into this in a lot of depth and the love that a baby receives in the first months has a profound influence on them for the rest of their life. He'll never know it or be able to define it of course, but it will be there.
amaa has your husband thought of memory boxes / letters? I would give anything to know mum's thoughts as an adult. To have something left of her.