According to the intial social worker (who, I have to say was fantastic), it is extremely common for young girls from what she called 'decent' families to suddenly take up with people such as grandsons dad, because they feel sorry for them and are convinced that they can take-care of them and give them what they've mised out on.
Yes, I may be biased in her favour, but when DD met GSdad, she was an intelligent, absolutely stunning 17 year old. Doing her a'levels, working part time and determined to get to university to study law - absolutely determined to become a barrister. She was beautiful, very tall and willowy, took great care of herself (had a legitimate modelling offer when she was 14 - turned it down because she wanted to go to university, etc). Monthly hair, waxing, nails, etc everytime she got paid. Loved being around people and had a brilliant social life. Our house was always full of her friends and as a youth worker I loved it. We had a great relationship and I even knew that she was sexually active (I worked as a young peoples sexual health advice worker) she used to ask me to bring condoms etc from work - so at least she was being sensible.
She met GS dad and everything changed. She stopped going to college, refused to go out with her friends and was utterly obsessed with him. He treat her like s**t. I've recently discovered that she would go to his flat and sit outside for three or four hours waiting for him, whatever the weather, even though they had previously arranged to meet. Within five days of meeting him she was pregnant.
She was determined to stay with him. And, we tried to be supportive. Rather than her mmoving into his flat (which was a filthy, infested place, and the local 'place-to-be' if you'd bought drugs and wanted to use them) - we asked him to move in here. We knew some of his background, brought up in care from age 2, supposed 'ex'-drug user, offenses for burglary, etc, but felt that everyone deserves a chance.
The rest, as they say, is history. Over the time she has been with him (3-years in March), she is unrecognisable as the person she was. She has gone from a size 8/10 to a size 26/28, always looks scruffy, never has her hair cut or tidied, wears other people clothes that are either too big or too small for her. Has lost two jobs due to her so-called partner causing trouble for her. She works to support them both whilst he sits on his idle backside doing sod-all. He has had work - a total of 16 jobs over the past couple of years - the longest one lasting three days. He always leaves "because people pick on him".