> Is this not euthanasia ? Why the hell not ?

Because it's a suicide. We already have a word for what happens to people who die after refusing food.

In fact the only reason the word "euthanasia" is being considered at all is because before she died she ended up in an end of life clinic that also provided assisted death services to other patients.

This is exactly like accusing someone of having had an abortion because their miscarriage was diagnosed at Planned Parenthood. (A scenario, I point out, that now seems a whole lot more likely given the horrifying way this is being portrayed in the right wing press)