Armenian restaurant in SF
Paul K and La Mediteranee are Armenian owned, I believe, but don't offer strictly "Armenian" food. There may be a few Armenian dishes, but I think they are more well known for offering pan-Mediterranean dishes. If there is time, your best bet may be to visit the Los Angeles area as there are TONS down there. Especially Glendale. Kudos to your sister!
Paul K's Cal-Med, no distinct Armenian focus though they do have kofte and lamb with pomegranate.
The La Mediterranee mini-chain makes some of the worst Middle Eastern food I've had. No discernable Armenian influence.
I think Yaya's Iraqi cuisine comes closest in flavor to the food I've had at Armenian church festivals.