Search Results: response to a thank you

my aunty gave me and my siblings very expensive gifts for Christmas, easily into the thousands. my brother and i were very surprised, grateful, shocked etc. we said thank you and hugged her. however when my sister got hers, i knew she did not like it, i know her better than anyone and i knew it wasn't anything she would want. she still said thank you, gave our aunty a hug. which i thought was a very good response. however later on she said to our aunty that our younger cousin should have it. her reason being that she felt bad that he didn't get as much as her. our cousin is 10 by the way.
i told her, when we got home, u shouldn't look a gift horse in the mouth, it comes off as rude or disrespectful or u dont care or want it. i told her that if it were me i would have lied and said it was amazing and kept my mouth shut about passing the gift along, because its the thought that counts anyway. she went off and said i should feel sorry for my little cousin, but i know for a fact that if she had got a gift she liked she would not have given it away. my poor aunty felt so bad and paced and whispered to me that she thought my sister didn't like her gift, and said she would get her another one. and i had to reassure her that my sister liked it, even though she doesn't. she sounded so sad and dissappointed in herself.
am i wrong in thinking that its rude to throw a gift back in someones face, no matter what ur intentions are and no matter what the gift is?