Oh time I'm sorry you're having such a shit time of it. It does sound like she's a difficult baby, I know how hard that is, and now having S has shown me how hard my ds was in comparison and how it was absolutely nothing to do with my parenting but all about him. It will get better! In the meantime, do whatever you can to survive it.
Try not to be too upset by what your man said, it's easy to think you know what you'd do when you're not the one in the middle of it. From what you've said before it sounds as though he's generally supportive, so maybe put it down to a badly phrased suggestion.
Keep trying to get out at least once a day, I know it's hard. If she'll still nap in her swing, let her. Can you spend some time with your sister in law, the one with the baby (have I remembered that right)? Could you also go to baby clinic or the children's centre or call your health visitor and tell them how lonely you're finding things? They might help you to find some mum's groups where you can find a sympathetic ear. It'll soon be September and various classes will he starting again, it might be worth signing up for something like messy play or a music group, which would tire her out, help you find some mum friends, and help you have fun with her again so it doesn't get you down as much when things are difficult.
Sorry if that's not helpful, sometimes all you need is sympathy rather than practical solutions. Honestly, it sounds like you're doing great, having a baby who won't sleep is so hard!