It sounds like you're coping well with the drastic change in birth plans.
Birth is such an emotional and personal thing that it's hard enough to take little deviations from the planned ideal, kudos to you for handling this all with such grace. It sounds like you're in mama bear mode for your little dd right now, which makes sense, but once she's safely in your care you may find that your emotions about the birth aren't nearly so stable--there's some good support here on MDC for birth trauma too, so if it sneaks up and hits you later know that you don't have to take it alone.
I have heard that arnica does wonders for c-section scars (both for helping it heal in the first place and also for helping the scar be minimal). I don't have personal experience with it for c/s, but it is pretty astounding for my accident prone little boys' bumps and bruises, so I believe it.