Some more interesting items for Noelle that basically confirm that unless Toby reworks all the flavour text for every item in the game, Noelle isn't going to be joining the party in any sort of typical way. They also feel possibly romantic, too.
Scarlixer
.. fine, you can have the LAST DROP. [When using it on Noelle; unused]
Doing this heals Noelle by 155 and Kris by 5
Then there's the fuckin MistleWP, which is a whip made out of mistletoe.
... ah? [When attempting to equip it on Noelle; unused]
Mistletoe being the holiday season associated plant that two lovers are expected to kiss under.
There's other interesting stuff, like Noelle asking Kris to do the strings on the GreenApron up for her, and also saying this when you equip her with the AquaKnife (she can actually equip it)
The fuck do you mean it's nostalgic, Noelle? Why are
knives nostalgic, you fucking crazed schizo?
Though it could add on to the theory that Noelle and the other three kids used to play Dark World games as pretend? Noelle is visibly upset when you give Tenna away to that fag Mettaton, too.