Hi, Pur! Yep, that was after me, I think. But nice to meet you! <3

Hm . . . My first instinct off what you've written is no, she wouldn't be able to sense the magic, but after thinking it through more, I guess I have to ask the question of if the magic is actively causing minute vibrations in the stone. Toph has no senses when it comes to magic, but if it's interacting with the physical world and causing an effect there, it's very possible.

In other words, I'm definitely interested. I probably need to understand the above first, though, to make sure it's possible.