Gosh, OP, what a difficult place you are in. I'm so sorry.
IME depression can be complicated . There may be lots of combined reasons you are feeling this way. There are also lots of things that may help, but it can be difficult, in the fog, to find your way through.
I'd just like to encourage you to keep going, trying different things. A different counsellor, different meds (with your GP's help), lifestyle changes. One foot in front of the other. You have your lovely DD to do this for, but most of all, you deserve a good, happy and fulfilling life, and this is completely within reach.
Exercise has been shown to have a huge impact. As has getting outside for 20 minutes within 2 hours of getting up in the morning. Would you be able to try to do this?
I have found mindfulness to be life-changing, too. 'Headspace' app has a free course.
I know you're not asking for help or advice here, so please ignore all of these thoughts if inappropriate, I just wanted to offer them in case they may be of help.
Lastly, I found this book amazingly useful. To be honest, I don't htink I've been depressed since I read it. Which doesn't mean to say I've not had ups and downs, I just don't get stuck there, if you see what I mean:
'Feeling Good, the new mood therapy' by Dr Burns