I suppose that might depend on whether or not she is Force-sensitive. If so, I find it reasonable that she could get back up and fight for a while. If not, then I guess it would be important to know the extent of the damage. If the graze doesn’t touch the eyes or go through a bone she should be alright to fight through the pain for a bit, even without the Force. If it does… well, in real life it would be unlikely, she’d be in a whole lot of pain from the cauterization and probably freaking out if she can’t see out of one eye. But in Star Wars, people rarely obey the odds, so at the least I would have her take a moment to collect herself.
One more side note: if she doesn’t lose an eye or anything, treatment with bacta might be able to completely heal the wound (or leave a light scar), especially if she can get it quickly.
Happy writing!
~ Jacen