[NorthMountain]

I realize she may have medical problems that cause her to be overweight but walking is the best exercise.

I notice she's using supplemental oxygen. This situation can become a death spiral. Not exercising leads to getting fat. Being fat leads to not exercising. Not exercising leads to getting fatter. Etc.

Having "enablers" in your life only makes it worse.

[Tom Tetroxide]

If she’s on supplemental O2 at 27 years of age, it won’t belong before she’s six feet under pushing up daisies. She’ll be lucky to make it to 30.