Unstuck
I hope that one day my children will take care of me in the same manner you are looking out for your Dad. I hope he appreciates you. It says so much about you as a person.
As for your sister....well, I have a family member that treats me the same exact way. The best way to treat her is to just smile and seem as happy as you have ever been. They hate that. Honestly, I would like to put my foot where the sun don't shine but I smile and act happy because I know she hates it. lol
Keep up the good work and I hope your Dad will be ok. Hugs to you!