A character whose canon point I'm considering has in his possession two shards of a castmate's heart/emotions. Said castmate is in Vatheon but has been restored to normal by her canon point, which is further along the story, so how would that work out for the shards? One is in his physical possession, while the other is nestled in his own heart. They intensify the emotion they represent in the holder.

I'm fine with getting rid of them entirely, nullifying their effects so they're nothing more than hunks of rock, them reacting oddly with the castmate, or what have you. I'm also happy to elaborate! (The canon, if you want it, is Tales of Hearts.)