Totally excuse me if you have ever answered this before- but, do you think a vampire's gift works on werewolves or CotM? Alice has "holes" in her visions for the werewolves, so it makes me assume it's probably a weak point for all vampires. But maybe it's just a limitation for her? We did see Jane use her power of Seth in BD part 2, but I've repressed that whole scene haha. (1/2)
But I also think somewhere in canon Jasper may have used this gift on the werewolves (to keep everyone calm) when they were training for the newborn together? I canât completely remember though. Just curious on your thoughts :). It would make CotM and werewolves more threatening imo if they didnât work. (2/2)
This is really interesting to puzzle over, I like this question!
In either case, I think Aliceâs gift is an exception, because it doesnât really work âonâ people at all.  Shields and things donât matter, because itâs practically the same as looking at something with her own eyes.  (Well⌠okay, I guess Afton would be the one exception, if he happens to be invisible during the moment sheâs looking at⌠or is going to be invisible, I guess?)
As far as why she canât see hybrids and shifters, we still donât know. Thereâs the âsheâs never been oneâ theory and the âwerewolves are chaotic life forms and thus have unstable futuresâ theory, but since SM never objectively confirmed either, there will always be other possibilities (and frankly Iâm not convinced of either). I guess the answer would determine whether she would be able to see a CotM in her visions.  And regardless of the reason, Iâm pretty convinced that her gift is able to adapt to those holes/blindness, and seemed to over the course of the Saga (see the final paragraph of this post) so I donât think anything is set in stone there.  In my opinion, it seemed to be more a case of âwhoa, my gift has never encountered this element before and everything is going haywire!â than âwill never be able to see these peopleâ.  (thoughâŚÂ even this theory doesnât make sense, since her visions are just basically looking ahead in time with her eyes or an objective camera, but whatever.  It might make sense if Renesmee canât see herself in mirrors, like the old legend?)
I definitely think all offensive vampire gifts (âoffensiveâ simply meaning âcan affect people and things in some wayâ) work on the shifters. If Edward can read their minds and Jasper can influence their emotions (Iâve always assumed he can, anyway, though I canât find a quote right now) then I donât why theyâd be immune or too foreign for any other gifts to operate on. Â So I think Demetri could track them, Aro could take their thoughts, Jane could burn them, etc.Â
But⌠yeah, what about the CotM?  I think it would depend on the gift.  I doubt Edward would âhearâ anything when theyâre phased, since the Guide seemed to paint them as truly going on animal instinct when theyâre phased, versus intelligence like the shifters. Itâs possible that even though Jasperâs gift works on the physical parameters of emotion, he wouldnât be able to feel/access those emotions, if theyâre in a more animalistic state (and itâs clear he canât feel animal emotions, or at least not significantly).  But Janeâs gift might work, since sheâs switching on a very rudimentary pain response that might not have anything to do with higher-order brain activity.  My guess is that when theyâre in human form theyâd be totally vulnerable to all gifts, though again itâs possible they might be a blind spot for Alice depending on the reason for her other vision-holes.