PLEASE HELP! Treatment options for excessive supination?

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Hello. I've posted a couple different messages here and never got a reply. Perhaps my inquiries were over-complicated. I'll just try to keep it as simple as possible this time.

My wife has a problem with excessive supination. Because her legs are misaligned, her ankles role outward, putting all the pressure on the outsides of her feet. Her arches appear to be particularly high and seem like if they were lower, they'd help take some of the pressure off the outsides of her feet. Because all of the pressure is on the outsides of her feet, she's developed painfully-calloused tailor's bunions on the outer edges of her feet near her smallest toes. To make matters worse, her toes curve inwards and her two outside toes overlap one another slightly (metatarsus adductus). This unusual shape makes it very difficult to find shoes that fit her.

Obviously, she needs to see a podiatrist for her feet and an orthopedic doctor for the leg problems causing the supination. My question here is, what are her treatment options for this condition based solely on dealing with her feet? From what I've read so far about supination, the options are:

custom orthotic insoles to balance the feet
braces to keep the ankles from rolling outward
custom orthopedic shoes
surgery

I've read lots of conflicting info. Some people say insoles will help and others say they can actually worsen supination. I haven't been able to find out much info on the use of braces or specific orthopedic shoes for supination. Has anyone with a problem similar to this found relief with any of these options? Can a professional please help explain what the best options for her would probably be?

Here's a picture, if that helps: