I'm sorry about your dad passing. I know it's not easy....
This means she will never come to this house whilst we are here and I will not see her at all.
But why do you want to see her at all?
If you have made efforts to have a good relationships and these "children" never accepted you, you should make an effort to let it go for your own sake. You have a loving husband, something that many people don't have, you have your own children and for sure, other good people in your life. Forget about these people's attitudes.
My dad left my mom for another woman at a difficult moment in our life (immigration and I was a teenager). My mom was furious, but I forgave them, because I loved my dad and I thought that he had the right to live his life with whoever he wanted. I don't buy this BS about how forever damaging the separation is..... They lived in another country and when I came to meet her (I was 23, 9 years without seeing him), I even brought a little gift. The relationship wasn't great, because despite me and my sister visiting once every few years, she always seemed tense and looked like she couldn't wait for us to leave. But if she were nice, things would have been better. Yet, when my dad passed away, I even phoned her.
All this to say that I think your SS are selfish and not nice. There comes a moment when one should get over oneself and move on. If they loved and respected their dad, they would respect his choices too.
About living in their family home, well, people always pursue their own interests and you have the right to do so as well. Just go on about your life and don't feel bad, because nothing will change. Your husband's daugther would have been cold with you anyway.
So don't waste time worrying about their attitude, them not coming is less stress for you honestly.