absorb works against hydra
it just does alot of damage since the game counts it as a "minion/pet" so it doesn't go through pvp reduce, ts only goes through 1/2 pvp reduce instead of 1/4th..

09/08 rising sun+2x dwarf star+95% fire resist you can survive quite a few hydras

but you probably don't want to use lightsabre

tgods+alot of life+a high damage weapon works better
that way even if you have low leech you can get quite a bit of life back every time you hit her, or even just one hit kill her