'Bring' involves motion toward the reference point of the speaker. 'Take' involves motion away from that same reference point. Ïf the person I am talking to is going out (away from me), I'd say "Could you take your wallet with you?" However, if I needed something from his wallet (an ID card perhaps) and he was coming to me, I'd say "Could you bring your wallet with you?" In the above case, you assume a certain context, even if it isn't mentioned. In the example you mentioned, the person being talked to must be going away from the speaker.

Thanks a lot to all of you! :)

The difference has already been explained. Bring = motion toward the speaker. Take = motion away from the speaker. The same as ''come" and ''go.'' BUT, and this is a big ''but," don't expect to hear most Americans observe the distinction. Most Americans of the boomer generation and later seem to consider grammatical "rules" more as "suggestions."......Sic volvere Parcas.

You made a very good question. The meaning of this sentence would stay the same, no matter which verb you used. What changes is not the semantic meaning, but the pragmatic meaning. You see, depending on whether you say "bring your wallet" or "take your wallet", you express different viewpoints. Basically when we speak, we see ourselves as the centre of the utterance. The time of the utterance and the location where we find ourselves will be seen as reference points.Let's say we're talking on the telephone, and I invite you to my birthday party which is next week. I don't have a camera, but I would like to make photographs, and I know that you have one. So, if I ask you: "Could you please bring your camera?", I am saying that from my point of reference, meaning that you would have to bring something to MY place, and I still see myself as the centre. If I say: "Could you please take your camera with you?", I'm imagining that I'm in your position, at the location where you are now, i. e. YOUR apartment. It is called deictic projection. We do it all the time, but we don't pay attention.

But it's def got no problem to say, "bring it THERE to her", has it? Like I say, really no big deal. Don't know.