Edema question

Chelsey • I'm married and have a beautiful little girl and a handsome little boy. Everything I have I owe to Jesus

I know someone who has a lot of edema in her feet and ankles all the time and it never goes away and some days might be worse. Her shoes are always too tight on her because of it. She is autistic and doesn’t understand how to properly take care of herself. Her cousin said her feet are just like that and it’s not edema. She also only drinks Dr Pepper and downs a 2 liter a day and eats anything and everything. My question is, could her feet just be like that or is it really edema and it’s just going to get worse? Has anyone else had feet that just looked swollen and they weren’t? This is a pic I found on the internet of how her feet look and sometimes it’s more than this.