Amanda Knox did a little modeling with a "Ta-Dah" only when Giobbi had her put on protective gear before entering the downstairs apartment of the guys. It was not the apartment where her friend Meredith was killed.
Amanda Knox did burst into tears when brought into the apartment where her friend Meredith was killed. It matters not one little bit that it was a day after Giobbi had her go into the apartment downstairs.
There is absolutely nothing unusual about a young woman like Amanda Knox to do a little "Ta-Dah" on modeling articles of clothing they have just put on as Amanda Knox had when Giobbi had her put protective clothing on before entering the apartment downstairs.
There is absolutely no reason for Amanda Knox to have the same reaction on entering the apartment downstairs as on entering the apartment where her friend was killed.