Time moved differently on either side of the door ; there was no real way of telling how much time would ' ve passed when she returned . No real way , except her link to Fred , and she 'd largely come to tune that link out , to regard as background noise unless she had specific reason to do otherwise . The memories the other woman made got filed away in the depths of her consciousness , set aside before they were even acknowledged , only to be examined again when they might prove useful . She would likely never have given Milliways more than a passing thought .
Question: What leads the character to choose to tune out her link with Fred except when she needs it ?
The answer to the above question:


She cares deeply for Fred and it is too painful to focus on it on a consistent basis