Hi Mjna.
Ultimately, everyone's recovery is their own. Leaning on you more would not help your sister get better faster. Sounds like you have a recovery of your own to go to. You have been so preoccupied taking care of other people, that you feel all at sea when you don't have the responsibility.
I've already said this once today, but what the heck... Need a grip? Get a group. Start learning how important YOU are.
Smoke