she would have to be a very high lvl to use a hydra bow (not even sure if at lvl 95+ they have 134 strength)
crusader would be better, same average damage less str requirement, you could put like a jewel of each element in..

1 x 25-50 fire damage, 1 x 1-100 lightning damage, 1x 15-35 cold damage, nef, nef, eth