Yes she did place her hand over her heart in 2012 but had the same look on her face:
Look in the 3rd row for the team pic that shows her hand
Yep! She knew where her hand was supposed to be in 2012. But you’re right, same attitude, which I do not remember from back then.
https://www.youtube.com/watch?v=qJ818um6bfw
It says she is 4’11” she seems taller than that or the other girls are very small.