By "starter" I think that she means ignition switch. And the problems with the door sound like something came loose in the door linkages to window and lock. The power steering pump shouldn't be too hard to fix, but I've not owned a ZX so can't say for sure. Nothing looks too hard to repair, but it's mostly mechanical, not electronical.
If I was looking for ZX, I would go take this one for a test drive. That is low miles for an L6 engine. Offer a discounted price for as-is, she probably doesn't really want to fix anything anyway.
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