Thank you for your comments.
Re ‘if you are dead what does it matter’, it matters not to me, but because it will affect the quality of life of those remaining.
It is not my feelings towards the children’s mother that I’m taking into account, it is the feelings of my DH, that his ex-wife should get nothing, which he made clear to me. If we could have put it into our wills we would have done, but it wasn’t possible without setting up trusts. We trusted each other to follow the other ‘s wishes - not worth a light if I just choose to ignore them. We just didnt expect his children to die before us.
If one dies I have to share their portion between the remaining 2, if the next one dies the remaining child gets it all. This is all kept separate from the money my children will inherit to ensure his children receive what was my husbands, and they do not receive less because he married me.
I don’t have the money to give them now - I wish I had. I would give it to them immediately.
I know it’s complicated