Dealing with an ED is hard for both family and friends. It's a human reaction to get angry and upset, but I think it's wrong for them to give up on you. But still, it's you that have to do the work to get well. And when they see that you do, then I can't imagine they would not be there to support you. If they see you trying, then they may change their minds.
But even if that would not happen, recovery will give you a new change to start new relationship that you will definetly never have if you keep staying sick. Therefore, recovery is the only way. No matter what happens, you will get happier when you are recovered - with or without your family.
I can understand that you love fruit and vegetables, but try to not base too much of your diet on them. You can of course have a little of them, but know that the more you eat of them, the harder your stomach will have to work.
Fast food is a big fear for most people with an ED, so I understand your struggles. But it's very good that you manage to eat PB, nuts and oil
It can be frightening to get extreme hunger, but the only way to deal with it is to eat. Imagine it as your body craving medicine! Try to distract yourself when eating bigger amounts seems scary - for example watch TV, read a book or listen to music that you love while eating. Maybe even go for a walk outside (in the beautiful nature where you can be alone and enjoy the calmness) while eating a sandwich or a smoothie.