Because our children were quite young still when we married (his daughter 11 my son 9) and we went onto have three more children we’ve got mirror wills, leaving all to each other, then split 5 ways.
When I inherited from my mum, I gave her biological grandchildren a sizeable sum each, and my step-daughter a piece of her jewellery and her son, our grandson a few hundred pounds for his savings account.
I do have a very good friend though, who lost her husband in 2016, after 35 years of marriage. She now has a new partner, they live in her house, she has two adult children as does ge, I told her so many times to remake her Will and make it watertight, I believe she done this, giving new partner the right to stay in the house for 6 months then it reverts to her two children. Most of her money came from her husband as she didn’t work for many years during children’s childhood and her husband was the senior partner in a GP practice.
My advice, following others, is see your solicitor asap