Ha, that's something I wish I could elaborate on a bit more! My example is a ring. Her mother gave it to her and it was meant to establish a link between them -- not quite telepathic but one that would allow Flemeth to sense her -- so if she was ever captured she could easily be found. She first disables the ring's magic and later reworks it so she can give the ring to someone else and they can benefit from a similar link, but there's no real explanation of her process or hints about the extent of her abilities in that department. It probably won't come up much and wouldn't be anything incredibly powerful or affect a large group, but since it's something she's capable of in canon it seemed worth mentioning.

And yes, I'm happy to use that mechanic! Looking forward to playing around with it.