Undines...I am so sorry to disagree but you are very, very ,very wrong to suggest alternative therapy for this lady. It will give her false hope and waste her money.
As a GP ,I know the complex physiological problems that result in leg swelling in the elderly.
A magic wand may help but, I am afraid, expensive herbal products won't.
Nothing can repair the damage age has wrought!
This is NOT ageist. It is practical.
The pressure bandages are the only solution. Uncomfortable, yes , cumbersome, yes ....however, gross ankle swelling is an absolute torture....and ulcers are the devil's curse.
Unless you have experience of this....please don't make ridiculous suggestions.