entire family estrangement

That's a sad state of affairs. I'm sorry for your loss.

It sounds as though there's quite a mis-match between your perception of "family" and theirs. You consider them all to be part of your family, whereas they see your father's second family as the defining unit. Your father's second wife can be excused this view to a certain extent, less so her daughter. Your father is failing you, but it seems this has been the case throughout your life.

You can't change their behaviour, but if you can resign yourself to the situation whilst maintaining a degree of contact (attending the wedding with a smile on your face, etc) and surrounding yourself with people who do care for you this situation will be more bearable.

I think *notnecessarilywiser" answered well.

I wasnt exactly sure what you meant by
She said I have proven to the family they are not a priority. However, I was the one who cared for my sister who was home on hospice 24/7. I would say I made her my priority then just after her services everyone stopped contacting me. My little sister tells me that I need some guidance.

Just wondering is there anybody in the family you feel you could ask outright what the situation is? Feel like you need to know where you stand or what exactly the problem is.
Sorry you are going through this too while grieving for your sister.

There are so many issues interwined here that I am not sure how we can help you - your sister died, your father's abandonment, your low opinion of youngest sister for sure interferes in your relationship with her....

If you don't feel comfortable, don't go to the wedding - that's the tip of the iceberg though

Taking care of your sister and hospice does have a high price - please look into therapy as you seem to need help.

Address one issue and the yarn ball will entangle little by little

I would recommend counselling too

Help you to put the pieces of this jigsaw together

If they are pushing you out there is nothing you can do to stop that, you can only get help

But you should also deal with how you feel towards your sister for getting Dad's love when you didn't... She may be a terrible person in her own right but eventually even if you don't forgive, those feelings need to be put down to move on

I think looking after your late sister shows you have your priorities right. You also have abandonment issues, that’s not your doing, it’s theirs. Do not go to the wedding if you know you will not be welcomed. I would send a letter saying this and that you feel unwanted, so will stay away. From now on don’t beat yourself up for others selfishness, make a good life for yourself, have you others that. care for you and you care for? . Just because you have family does not mean they have permission to treat you as if you don’t matter, don’t be bullied. Do not accept the unacceptable.

It sounds like you were an amazing sister to your older sister and it must be very painful not having your feelings listened to.
I think that, if you can afford it, the best place to share these abandonment feelings is with a therapist. If you think that you won't be welcome at the wedding it might only make this situation worse.. I would try therapy before hoping to resolve these issues with your family..

That is where I stand and my thoughts are thanks for your input. It is greatly appreciated!

coco12 no there is nobody I trust enough to speak to about the situation. They will take the conversation and talk behind my back. Then they will act like they are psychologically evaluating me like they are fully capable of it. I am a RN and have been for 20 years and if you do not know there is no way we cannot be mentally incapacitated and work.

Effort for effort ... do not put all your energy into people that don't want you around.

You are better to create your own family with a close circle of friends and move on from this toxic dynamic.

First of all, I’m very sorry for your loss.

Next, I wonder what good would come of going to the wedding? You don’t like your sister, you don’t trust her, your father, or extended family. It sounds like a completely miserable situation.

Skip it.