Wills say as much about feelings as they do about fairness I think. If I remarried now, as a mother of adult children, and my new partner also had AC, I would have no compunction about ring-fencing ‘my’ share of the collective estate for my own family, and would expect the partner to do the same. If I had remarried when all the children were young, however, and had helped to bring them all up as a new family, I think I would see things differently, as making more of my own children would show I loved them more, which should not have been the basis of the stepchildren’s childhoods. I appreciate that it gets complicated when there may be inheritance on the other side too though.
As regards my own birth children, I would always split things evenly regardless of differences in their circumstances. Whilst I am alive, if one needed financial help for a particular reason which didn’t apply to the other, I would help if I could, but what I leave behind is for both of them to share, as I love them equally.