There's a few memos which both clarify and confuse the Grace Lee situation. In the first they discuss dropping her because her contract is relatively expensive and they found they weren't using the character much. Then there's a later memo when Gene R. suggests bringing her back now and then as a guest and with a more flattering hairstyle. Obviously the latter never happened, but that there was discussion about bringing her back suggests a) Gene didn't necessarily think she wouldn't want to, and b) the idea suggests there was no concern over drug or alcohol problems which have been alluded to over the years. I wish I'd seen these memos before Grace died. I would have liked to have heard what she thought about them.