[RetroTechie]

As someone who's been in vaguely comparable situations a # of times, but much shorter & less extreme, I've learned this distinction:

Autonomy = bring supplies, and go without outside help for X (but limited) amount of time.

Self-sufficiency = provide for one's own needs, without outside help. Potentially indefinite.

Note that one can be self-sufficient for some (like water), while not for other things (like food or fuel).

Yes, this distinction is somewhat fuzzy. But it's pretty clear where this woman's adventure fits in.

That said: impressive feat!