it's been 3 years ago.. i defeated that josephine with this spells..
summon dreadknight = lv3?
elemental hail = lv3?
restoration = lv5?
skeletal wall = lv4?
shield = lv2?
im sorry if i had questions marks in it because i cant really remember the level of my spells exactly.. its been 3 years ago.. here's what ive done.. i summon first the dreadknight and the skeletal wall to distract her and the dreadknight that she summons.. if she casts blinds with me, i just have to remember where she stands.. click and cast elemental hail on her.. if she teleports, i check the four corners of the room, if i find her again ill cast the elemental hail again on her, i use the shield spell to resist her spikes a bit then restoration for my life.. when i run out of health and mana, i drink a white potion.. that's all what iv'e done to her 3 years ago..