@bringmethehumous My DH also runs his own business from home and that has been a huge help - if only to make sure that DD was not alone at anytime during the day but also for him running errands. Food shopping is not the same when caring for an anorexic - having to buy calorie dense foods, I’ve had to re-educate myself about diet and nutrition and shopping does take longer.
When refeeding I couldn’t believe the ED monster turned my pleasant daughter into a foul mouthed, violent, obstinate creature - hiding under the bed sometimes to avoid snacks. A parent had warned me what to expect, I didn’t believe her - I thought her DD possibly had further mental health issues, what she warned me about all came to be true. Food thrown, punches, kicks - furniture smashed - I say this to forewarn you, as @Girliefriendlikespuppies says brace yourself - you may want to consider who in your extended family is able to deal with this at meal and snack time if you are at work - they have to be firm with no negotiating with the ED otherwise food will be missed. It is very hard and upsetting but wholly necessary.
Sorry for the doom mongering, there is no reason why is should not get better but right now you are in the middle of a storm and it takes all your energy, emotional and physical.
I bought Eva Musby’s book, there are lots of practical tips and lived experiences to draw upon - some of it is available online.