Meaning, you don’t need to believe there was evidence of something in her apartment in order to search it. You need to look just in case something turns up, even if it might be unexpected.
It sounds like you'd be okay with the police getting a search warrant to search your residence, not to confirm their suspicions that you might be guilty of some criminal activity, but just to snoop through your belongings and papers to see if maybe they can find some evidence that you may have done something wrong that they aren't aware of.
In other words, this was a fishing expedition.