The youngest of the three alleged slavery victims is said to have written letters to a neighbour, telling of her life as being "like a fly trapped in a spider's web".
The woman became infatuated with neighbour Marius Feneck, 26, the Guardian said, reportedly writing him more than 500 letters in seven years.
One letter apparently tells of how she suffered "unspeakable torment" behind locked doors and windows, and of how she was terrified that her captors - "these evil criminals... who dare to call themselves 'my relatives"' - might do something to him.
Documentary footage of the man said to have kept three women as slaves in south London has been uncovered by ITV News.
The political past of a couple accused of holding three women against their will for more than 30 years, has emerged.
A couple were arrested after police arrested three alleged slavery victims said to have been held against their will for at least 30 years.