I havent commented at all because I am a newbie, but I have been reading your thread and quietly pulling for you. These ups and downs are completely normal. I get them myself. I would just say that the best thing I do is force myself to get out of the house and be social, exercise, and talk to others. Action is important, otherwise it is really easy to get lost in thoughts and cheeseless tunnels.
I would also say that your sister should come. You need that support, that confidante right now in your life right now. A week after BD my best friend flew down to spend the weekend with me, and that is the only way I survived it. I understand that she is angry at H, but can she really not control herself? If she is willing to come and help you, I think you should accept it.
Best of luck with everything, I am pulling for you!
W 34 Me 42 Married 7 years together 8 0 kids 1 beloved dog BD 4/6/2018 I moved out 4/7/2018 I moved back in alone 8/05/2018 I file 3/06/2019 D official 5/7/2019