It can be worth making a poultice wrap with a foot problem if there is infection to draw out. Ours sometimes get problems from thorns, and sometimes you can't even find the problem but a poultice seems to help. I use half a nappy dipped in an epsom salt solution and use gaffa/carpet tape to wrap it on. Usually leave on for 2 to 3 days. I have also used this to keep a treated foot clean and dry, without soaking in epsom salt solution, and with some plastic sacking over the half nappy wrap and then the gaffa tape.
Sounds like she is well on the well to recovery now though