My DS has metatarsus adductus.
Ask to be referred to a physio. Get some stretching exercises for her, DEMAND to be given piedro boots (or similar reverse last type corrective shoes).
My DS' was very severe and he didn't walk unaided until he was 23 months, he also has onther SN though.
He had serial casting aged 3.5 where they cast and hold till set a stretch on calf, these are changed weekly giving a little more stretch each time. first time he had it for 4 weeks, but then his feet had grown and he couldn't wear his boots was a problem in ordering and 5 weeks later they arrived and feet had grown again! by this time the good work done by the casting was undone and he went back to casting for 3 week until new boots came. This has had the most positive benefit for DS.
DS now has night splints, day splints and a pair of reverse last shows with a metal plate in the bottom to stop him tiptoe walking.
I cannot believe you are not getting better help, it is so much easier to do this when they are younger. DS didn't get his boots until he was 20 months.
You need to be firmer with your requests for assistance, the squeakiest wheel gets the most oil I'm afraid.