... What I really want to know is how on earth do I cope with the strong feelings I am having. I can't eat, thankfully I am overweight so I can live for a few weeks without food. ... I fluctuate between tears & anger. Will I ever feel 'normal' again? I have to keep it together for our ASD granddaughter, she is already struggling to understand why she has to move out of her house when she hasn't done anything.
I barely have the energy to pack our stuff, let alone move it. Life sucks sometimes.
I have a few practical ideas, if you don't mind pragmatic suggestions.
#1 I recommend buying two things: soup and lotioned tissue. The soup is because in order to maintain your energy and strength you do need to eat * something * and yet you have that big lump in your throat from crying and can't get anything past it, right? So get some soup. It's warm, it's nutritious, and it's kind of comforting...and being liquid it can get past the lump. The lotioned tissues are because most likely, over the next many days, you are going to be doing a lot of crying. When you use tissue that doesn't have lotion on it, you actually chap your eyelids and your nose...so then you have salty tears going into your chapped eyes and your nose will sting. The lotioned tissuesare more gentle on your skin and you'll avoid chapped eyelids that swell shut.
#2 I have to admit I also thought "Hey wait a minute! If he wants out, why are you the one moving?" but after hearing your reasons (The rent is too much and The business is there), I can see that actually you are thinking of how you'll be able to support yourself with or without him, which is wise. I'm sorry your life and your gD's life are both thrown into disarray because he's untrustworthy, but I'm proud of you for facing it honestly instead of being in denial. It does suck...but in real life you are where you are, and I think you are making decisions that are the best FOR YOU (and her).
#3 As far as coping goes, I actually would strongly recommend a support group. I personally went to two support groups when I was going through my divorce, and it was very helpful to me to know that I was not alone and that others also thought and felt like me. In other words, I could tell that it was "normal" to think ___ or feel ___... and that was reassuring to know that it was part of the healing process and wouldn't stay forever, etc. I personlly went to a Rebuilding: When Your Relationship Ends
group, and you can find a group near you here: https://rebuilding.org/seminar-locations/
(They call it a "seminar" but it's about ten to fifteen people who meet for ten weeks.) There's also an assessment you can take here: https://rebuilding.org/assessment/
to see how you're doing. If you don't want to "go" somewhere, you can also join an online group here: https://www.afterdivorcesupport.com/rebuilding-seminar/
If this doesn't work for you, you might also consider DivorceCare
which is similar but often meets in churches and is a little longer (like...they meet for a whole season). As an example, if you attend regularly and are really comfortable with your church family, it might feel a little extra supportive to a DivorceCare group that meets weekly at your church and get to know others who are going through what you are going through, etc. You can look for a nearby group here: https://www.divorcecare.org/