UPDATEEx partner, mother of my partners kids

Sophie

*UPDATE*

So after weeks of fighting arguing and the kids being messed about we now have the eldest two in our full time care with her having them some weekends. Extremely released and stressed at the same time

Now this won't be like most posts your read of a jealous new partner etc but I just wanted to get an inste into some other like minded people's opinions.

My partner and his ex where together for 7 years. At the time she had 3 children. The first she does not see the second she was pregnant with when she was sleeping with my partners brother who isn't the father and my partner got with her after sleeping with his brother and bought the child up as his own. They then had my partners biological child. They split due to her lying about cancer and miscarriages and years of heart break as I've heard from her close friends and my partner. The woman has had a difficult past but the lying is atroshus. So since me and my partner started dating near to three years ago I've built a brilliant bond with the two kids but the mother trys to play me off with them with the father. She was found to be 3 months pregnant when me and my partner had been together five months and she doesn't know who the father is. Then she met a guy from Turkey. Understandably she went abroad with the newborn unfathered child and left the two eldest in our care. The older child the boy went through depression and anxiety issues as she was away for 17 days and had previously said she would take them for Christmas she never did.

So after all that fiasco. The eldest child has just helped her give birth to another child (5 in total, no problem with that at all her choice) and is looking after the other baby constantly nappie changing feeding and doing the housework as the mother sits there doing nothing not even looking after the newborn.

This is the first problem. It's stressing the 7 year old out. He doesn't eat properly anymore he gets picked on by his sister who's 4 who's my partners biological child.

Now. My i laws are the sweetest people your ever meet and have a lot of stress at home with health complications and the fact they look after one of their grandchildren full-time who has mental health issues. And she's dumping the kids on them constantly they buy them shoes when we can't and help us out alot when we can't afford to have the kids for three weeks at a time while she's in Turkey. She claims benefits and illegally and fraudently claims from the university aswell at the same time. Now to make matters worst she's trying claim child mainantence from my partner although she never has the kids as she lumbers them on us or my in laws lying she's in hospital when she was away at the seaside with her partner.

Do you think she's neglecting her children?

Do you agree my partner should be paying maintenence?

I don't like to get involved but when it's effecting the income of my family and she's putting rumors between me and my partner I'd like to try and tame the attitude in my house as I've don't nothing wrong.

Any advice or help needed