Same for me. She recharged wand once, i used all charges, came back and that bug happened.
If you equip and unequip wand, dialogue option reappears but that's it, she still can't recharge it. I tried to use different party members, selling and buying the wand...
I was told there is another way to get past Shriekiers, but being unable to do the quest the way i want it to be done seems kinda dissapointing.
Also I saw some post on steam forum describing this problem and all of them was quite recent.
