Not sure where you live, as i am in UK. But if you google Alginate dressing all links will pop up.
Amazon sells them with next day delivery, plus other medical sites. The dressings are for humans, so do not search on vets ect. Honestly they are not expensive at all, and
if you do try it, when you remove the dressing, you will see all the bad stuff clinging to
the dressing. Plus you will be shocked, in how clean the wound has got. Keep doing it
for up to 10 days, maybe less, as you will see for yourself if it needs a few days more.
Eventually new tissue grows, and the wound closes up. It is amazing stuff. It may cost you more for next day delivery but the dressing itself is cheap. If you do buy some, just
cut what you think you will need, yes she will flinch at first, cover her eyes and talk to her.
It will take 2 of you, but crazy thing is, when you take it out, she will not notice, as the
dressing has cleaned the wound, so it is not sore. Keep changing it until you can see a
diffrence. Hope you will try it as it saved ours no end of times.