Well, if it only occurs when at least two of those three are here, then, well, you appear to be developing telepathy, my friend. But it doesn't seem very developed yet.
You see, those three have a tendency to communicate psychically when they want to speak privately, or they forget that they're excluding people. It's almost like people speaking in one language in the presence of someone who doesn't know it. They generally just look concentrated or thoughtful when they're doing it, but having pieced together some broken conversations between them, I'm sure that's what's happening.
And perhaps you are starting to pick this up. Try and hone your new talent - concentrate on the tickling and see if you can make any sense of it
Yes, it does seem that you are developing telepathy, but it also seems there are other latent abilities you have that are so far untapped. Looks like you're a regular superwoman, what with the flying, telepathy and a further unknown power!
Don't get a swollen head, your talents aren't developed yet!
I'm going to do some more work on angel genetics for a bit. Let me know if anyone gets hold of any kind of cell sample (including blood and saliva) from this levelonemaster.