After you've defeated the lv. 20 Shiva avatar fight, there's no need for the fork anymore. You can't warp back to the Cloister of Frost again once you've defeated Shiva's 20 cap version. If you had done the normal, uncapped Shiva fight (with someone else since I assume your Smn is only in the 20's) and got Shiva that way, you could have used the mini fork as a way of quickly just warping to the Cloister rather than running through Fei'yin, since as long as you don't actually defeat the 20 cap version of the fight, the fork can warp you to that Cloister.
My thoughts and reviews
Lady Jinte wrote:
Vlorsutes' Negotiation Skill rises 0.2 points
Vlorsutes' Observant Parent Skill rises 0.3 points
Vlorsutes' Argument Diffusing Skill rises 0.1 points
on all sorts of sci-fi stuff...and things.