Incest Survivors Support Group
Incest refers to any sexual activity between closely related persons that is illegal or socially taboo. Consensual adult incest is very rare. Incest between adults and prepubescent or adolescent children is a form of child sexual abuse that has been shown to be one of the most extreme forms of childhood trauma. If you or a loved one is a survivor of incest, join the group...

I think the fact that you're came online to tell us you feel that way is a really positive thing. It means that you recognize that something is wrong and are doing something about it...as opposed to rolling in the corner ;)
Sometimes I can't think of anything to say because there is just so much going on in my brain that I can't narrow down what I need to think about first.
Quick
what is the first word that comes to your mind?
Expand on that word....does that help you form your thought a bit?
No matter what it is or isn't for you at the moment, finding people who care online and sharing this burden are very positives to your negative as Lady Janella said.
Remember to breathe. We care.
~K and Destany's House
Remember it will pass and try to get involved and engaged with your granddaughter if you can.
Hugs
Roller coasters for me too, although sometimes I can identify where it comes from.Very often, I get the "delayed effect" blues,I feel great just after the therapy session and then, boum, my mind gets hold of what had been "dug up", like 2 days after and I go down.
Sundays used to be bad for me.I would overwork during the week and crash on week ends.
I am sending you big waves of love to cheer you up.