Hi Angie
Glad things are (another pun not intended but the phrase fits !) looking up for Char. At least, in so far as Char can cope pretty well and seems happy post-hydrops. I guess you and Chris know best of all that, if you had to score on a quality-of-life spectrum, where Char would be and it sounds like that's getting back to how it was before.
Turning to the "what about the graft?" question, I'd give the same advice for you as parents and Char herself as I'd give for anyone. Which is: you have to be absolutely, 100%, completely and totally sure that it's the best thing to do before opting for a graft. Once you've made a decision to have a graft, then commit to it fully. But you can't do that unless you're certain in your own minds there's nothing by way of alternatives. The thing about a graft is, there is (here's another unintended pun) no looking back. Lenses -- even uncomfortable RGPs -- Intacs, intraocular lenses etc. can all be removed if needed. You can never simply "go back to how it was before" after a graft. You've got to move forward with whatever the outcome you end up with, good or bad.
I spent well over a year basically (I'm happy to 'fess up to this) flip-flopping about whether or not to have a graft. And I'm usually very decisive. That's understandable I think because those of us with Keratoconus almost inevitably have "good eye days" and "bad eye days". You have to I think watch yourself over a period of time to really understand whether the bad eye days genuinely do outnumber the good eye days in sufficient quantity that you get to that point where you're just fed up of having to do the monitoring. You know that however bad the outcome, it's not any worse than what you're living with. It appears that Char is so set against RGPs, if that continues, it will limit her quality of vision -- ultimately, that might force the issue if Char starts to need better visual acuity to do the things she enjoys doing. If I remember correctly you're investigating soft lenses, so it might be that Char achieves the excellent comfort and good vision that many with Keratoconus can get with that lens type... see what I mean... there are a lot of moving parts in this decision and it can take a while to go through everything !
So, give yourselves and Char a bit of time and space and take each day as it comes. Don't drift, of course, put some notes in your diary or on the calendar every few weeks or every couple of months to take stock of how things are for you all. Come to a decision together, gradually, over time.
If I had a magic wand, I'd wave it and it would all be a lot easier for you, (well, after I'd magic'ed up some nice cars and a holiday for myself maybe

) but absent that, hope what I've said helps a bit.
Best wishes
Chris