Well, I guess it's difficult to comment appropriately
considering that we know nothing of this woman's
medical background or possible chronic condition—or
whether she paid for two seats (which I'm guessing
she did, under commercial airlines policy).
Whatever, this type of public "fat shaming" is
offensive and could easily cause this unfortunate
woman a lot of unnecessary mental distress, which
could exacerbate an already fragile mindset.
I'm also sorry that you've chosen to share in her
bullying by further exposing this gratuitous image,
Violet Crumble, (ironically with 58g sugar per 100g in
every bar). And to describe her as "a piece of lard"
only piles further offence on your already bigoted
opinion.
You might like to check out this Wikipedia entry:
Social stigma of obesity in order to correct your
ill-informed, stigmatising opinion.
You do know don't you that your sort of fat-shaming
aligns very closely with racism—that is unreasonable
dislike or aversion to "the other"? Or maybe you don't?
—And of course, our resident health guru Aquascoot
has to get his 2 cents-worth in about his favourite
old warhorse; overweight, slack and idle people
eating to much convenience food. He even opines
that obesity can exacerbate contracting COVID! LOL.