actually i was just getting ready to do this too, i have been storing all the ones i find all game so when i was ready i could go to her and i would already have them, mainly because i was hoping she would become a candidate marriage afterwards, since i helped her. does anybody know if she does? but btw, i never finished it in my other game, so im not sure if its worth it, not trying to change your topic sorry. i would imagine the nirnroots are alot to give away since they don't grow back, and they can be used for invisibilty potions, and i dont know the other 3 uses but i imagine they would be decent potions. i guess it's a deep pondering decision for you, but i'd say do it, since you can always buy them from alchemy shops for not that much gold, if you picked the whole world dry. or there is always the crimson version, but idk what that does other than the quest u get from them.