This is where the problem is ... Amanda saw the broken window before she went back to Raffaele's apt:
"She said that after the shower she got dressed and noticed that Merediths door was locked. She went into the other bathroom and said that there were faeces in the toilet. Then she went into another room and noticed that the window had been broken and that there was glass inside. She told these things to her and the other girls present. Then she related that she had gone back to Raffaeles house and had rung Filomena. She remembered that on that occasion at police headquarters Raffaele was very calm, silent."
Motivation Report (page 38)
If I were living in a foreign country where I was not fluent in the language and discovered a break-in. I, too, might first turn to a friend from that country who could help communicate with police.