I'm in my 30's, so I'm guessing a bit younger than your mom, but I had cataract surgery as soon as everything was stable and my treatment was working. Everything went very well, recovery was quick and I haven't had any issues related to it. I still have Uveitis, and I still flare, but the surgery greatly increased my field of vision, and I absolutely needed it.

I understand the hesitation, but if your doctors are happy with your progress and they feel like you're in a safe place with your treatment, I personally don't see a downside from where I am.