It's surprising that the PDF I looked at (the first one) doesn't contain any access-log data at all. Shouldn't it contain the time, date, and IP address of every time she's viewed a page on Facebook, at least as far back as they keep HTTP access logs? Or do they not log the user ID when they log HTTP accesses? Someone (in Europe, therefore not me) should ask the Irish Data Protection Commissioner to get an answer to these questions.

I doubt they HTTP access logs are tied directly to the user id.

It might be possible to derive this information by linking on the IP address, but that isn't the same thing as a direct link at all.

Facebook is able to tell which profiles you view more frequently than others, so some sort of log data correlated with users is being kept.

That's different to HTTP access logs.

If I view a profile on the mobile app or on the web page it is (presumably) measured the same, presumably in the application layer. That's different to recording the your id in the HTTP access logs.