I want to grow an inch?

The anorexia did probably stunt your growth. However don't worry. Hormones in the average teenage body for growing don't even slow down until 21. In some cases people have grown a foot from 18-21. Based on the height of your family, I can practically guarantee you that you will grow an inch. However it may not be overnight like you hope. I suggest sitting (or sleeping) a little more than usual that way gravity has less of an effect on you. Also eat really healthy. I know that sounds cliche but it works. If you have any other questions, just message me.