Hi and welcome. I think some of your facts might be confused, (I did not know there was anything higher than stage IV for cancer)...but we can probably add some help here.
Yes, some people do get chemo first. There are many kinds of chemotherapy, some of which are typical cancer drugs that kill cancer cells and some healthy ones too (causing hair loss, etc), and others can target parts of the cancer cells and not bother the healthy ones. Sometimes people have a large or extensive tumor and they do chemo first to try and shrink it or bring it under control before doing surgery. Some people might not be surgical candidates, depending on where the cancer is.
Inflammatory breast cancer is very serious and getting chemo first before surgery is not out of the norm.
Good luck to your friend!
Lori