hallo,yes totally treatable at home. Your wife has a fungal infection in her toenail. These are notoriously difficult to get rid of but do try to get some toenail fungal solution from your pharmacist or buy online. She may have to use it constantly for 1-2 years, yes I know that sounds crazy but it really does take that long for the nail to grow out. It can take even longer.
Thank you so much, we’ll get down to the pharmacy