Hi dear Cat ~ Bless your heart ~ I'm so sorry for your losses.

I can't imagine what you're feeling right now. The pain must be just awful.
I had a similar year in 2001 when my granddaughter died, my husband died, and my mother-in-law died all within 6 months.

I thought I'd lose my mind.
You haven't had time to grieve your dear husband, and now your sweet sister dies! This will put you in overload. You need to talk to a grief counselor. Why not call Hospice? They have wonderful grief counselors ~ I talked to one after my husband died, and I'm so glad I did. It helped me immensely - and perhaps it will help you too.
Please know that you're in my thoughts and prayers. Please treat yourself with kindness, much like you'd treat a good friend. Pamper yourself and be patient with yourself ~ you're going to need all the support you can get.

God bless you and take care. Hugs, Lee