OP, your friend might just be too sensitive to lemongrass EO. It's know irritant.
Same applies to other EOs.
As a female I never had issues with my soap. I scent and colour them reasonably, but never had issues.
Not here to judge, but "water only"? Does it work? What happens at those times of the month? Does "water only" really cut it then? Sorry if TMI.
Vagina is a self-cleaning but outside, actual vulva plus other bits on the outside, perfectly safe to clean briefly with soap. ******** and soaping actual inside (vagina) is not a great thing to do though.
Soap "adult toy" came to mind when I saw this. As if! Oh my gosh! Who DOES that?? Rhetorical question, peeps. Rhetorical question!!
DYING.
The forums I participate on happen to be mostly female, so lady part stuff does come up on occasions. I wonder if man part stuff comes up on mostly-man forums.
Like are there threads on hunting forums about men feeling not-so-fresh 'down there'?
Between TEG's "YLBMV your lady bits may vary" and this, I just spewed coffee.
This thread is getting hilarious.