If you use a shadow potion and wait for her Blind spell to wear off, you will have time to make an attack. If you Blind her first, she will not be able to cast spells.
I found it more reliable in
iZakaroN's SaveEditor to increase the number of unused skill points, then distribute them after loading the game.
If you quick save before running your mouse over an item/chest/merchant or hitting the alt key, you can identify the item or trade with the merchant, then quick load to get different stats or inventory. This can be done repeatedly to get the best stats or specific bonuses on an item (save after finding good candidates) or looking for specific items (such as spell books or charms) from merchants. This might take awhile, but you could get spell books from Kroxy this way.
PS IIRC, someone said that if you use the survivor's sneak skill, you can cast Lightning without turning visible. Enough restoration potions for mana, and you could take her out that way.
