I missed an epic spell - plz help (spoilers)

[schnippy]

hello folks,
I haven't bought anything from Damarose when i saw her once before the hounds boss fight very early game. yah...aaand i cleansed a beacon more or less by accident. the whole plot went way above my head xD
I want the "Adyr's Rage" inferno spell so bad. as i understand it, Damarose won't become available again for me as a merchant bc i cleansed this one beacon. i am mid game now... almost lvl 100.
is there any other way to get the spell for this char? legit ingame at best?
or do i have to trade it or maybe make a second char, rush to the point and mule it to my main? is this even possible? i haven't tried trading.
anybody knows if savegames work like in souls games? item duping via savegame copying etc.
thx in advance and gg :)

[Celery]

Lvl 100 mid game? How much have you been grinding?

[schnippy]

very much.i l love farming and get a little op early. it's kind of a ritual since ds1. i am not the greatest master. therefore I need stats ^^

[Dorf]

I can't confirm but I've heard that the NPCs move around to other locations even after cleansing.

[schnippy]

i read that this npc will become hostile and fight me. she drops few items. but nothing good for me

[schnippy]

turns out you can't trade spells because they can't be dropped out of inventory. damn! then i have to wait till ng+ i believe.
this can take months with my speed.