Janet - I have been following your story and I am so sorry at what you are going through.
I just wanted to pick up on what you have said - "I just look at my girls and all the things I cannot give them,opportunities that every child should have...."
then
"...the right of this child to be loved by it's mother"
I would not judge you ,whatever you decide to do,and I can only speak from my own experiences and the decisions I have made.
However, I strongly believe that the greatest opportunity that any child SHOULD have ,is to be loved by it's mother.
As a single mother,I feel sadness that my dc's are not growing up in a Mummy and Daddy family ,and also that I cannot afford to buy lots of the treats and trips and goodies that lots of their friends take for granted.
However,I did grow up in a Mummy Daddy family.And I was miserable and lonely.My mother is not someone from whom I have received anything close to love .Not then and not now.Nor from my Dad.
My greatest priority is to ensure that my dc's grow up knowing that they are loved and valued for being the unique people they are ,and that they are given what I think they need to grow into emotionally intelligent,generous and warm hearted people who are able to enjoy living in the real world,with other people.
I place a very high value on moral integrity,and aim to enable my dc's to develop theirs so that they are healthy of mind and spirit.
These qualities cannot be bought with money and do not require convention to be developed.
If anything, an environment which is outside conventional "normal" enables us to confront and discuss things which we might not otherwise meet in day to day life.What I mean is,I think dc's and I learn more effectively and more meaningfully from things that happen to us - questions from friends,remarks made,assumptions we challenge - than we would by watching them on Eastenders!
You say "My girls are ok" and "I have to do the best not to screw up this kid with bitterness and anger"
Fantastic- what more could any child ask for than a mother who loves them and can champion them as you are doing.
It is bloody hard work with an unexpected new baby.
I write this as my 7 week old dd grouches and wails next to me and the teenage dd's row loudly in the kitchen.
I wish I had a lovely dh or dp.But I have to negotiate with 2 xh's who are frustrating and annoying and an absolute bastard abusive ,mad xp who believes he owns and controls the universe.
But my dc's will not make the choices I have made.And if they do,I will support them with love.And advocate for their rights as my adored children.
You can and will survive this.Your girls will love you and value all you are doing for them.
You will decide what is best for your family and come out of this stronger and able to see yourself as the fantastic mother and woman that you are .
Good luck x.