I've never been able to figure out if Filomina's bedroom door was open or closed when Sollecito arrived. According to him, it was open. According to some of Knox's statements, the door was closed.
What has always interested me is that Knox knew that Meredith's door was locked during her first visit to the cottage that morning. I have to agree that if Knox checked one bedroom in search of a possible burglary, presumably an innocent person that was concerned about a burglary would check all the rooms. She did check the large bathroom even though she had no reason to go there.
I suppose that, like the ever changing alibis on the night of the murder, the explanation of activities on the morning of November 2 is also a moving target. She showered and she didn't, Filomina's bedroom door was open and it wasn't, she checked Meredith's door and not Filomina's door, she was panicked because Meredith's door was locked and she wasn't, she wasn't concerned about the crime scene so she went for lunch, she was concerned about the crime scene so she phoned her mom 2.5 hours later even though nothing had changed.
I don't think that we can rely on statements made by Knox, so we have to rely on both independent statements, and on logical reasoning, for information. Sollecito stated that Filomina's bedroom door was open when he arrived. If that is true, then Knox had to have seen the broken window and ransacked bedroom, so she should have contacted Filomina or police. She would have walked past Filomina's bedroom door at least four times. Would she have checked only her bedroom and Meredith's bedroom door?