My relationship with my sister in law has never been fantastic but i recently sent her a lovely birthday present - a necklace which I carefully chose and sent on time (!) after a week I heard nothing so I phoned my brother. he checked with her and called back to say she had got it and loved it and that a thank you card would be in the post. This makes me livid! I am not some distant auntie and we are not living in the effing dark ages. Why oh why is she not capable of picking up the phone (yes, she has a mobile) and just saying thanks? Even if she doesn't like it, some kind of acknowledgement would have been nice.