My dil had two very small girls when she met my son. She told him and the children when they got older that their dad had gone to prison and then died in prison. Her family was also told this and believed it. My son brought the children up as his own and loves them to death. When the eldest was 20 the truth came out in a family arguement, they had different fathers. One didn't even know he had fathered a child and the other was alive and living in another part of the country. This lie caused terrible upset for sometime but thankfully they now recognise how hard my son worked to bring them up. So I really believe that you must be honest with the girls because the truth will come out one day. However much wrong she has done by leaving be kind about her to the girls and I believe you should let them have limited contact with her, She is their mum however badly we think she has treated them. I hope it all works out well for you and your family
How to Keep Living at Home Longer
When a political leader lies on their CV - can you trust them?



