Bright I hope things are getting better. For what it is worth, and I am very sorry your dad cannot do or say what you need, but do take from him what he is willing to give, money for your home, which you will share with your kids. Your teenager has been through so much and hopefully will come through this. You have all been through so much.
I am sorry you are dealing with fallout from family situations and that people are saying and doing unhelpful things in your wider family.
Concentrate on what you can manage and what you can influence.
Concentrate on your family and building connection between them all.
Remember there has been an outpouring of affection and sympathy, maybe even empathy, from posters who send you many messages, this thread is up to 24 pages, 597 messages. Concentrate on the good and work towards what you want. In a long time all these squabbles and disappointments will be in the past but what will remain is your children and you. Take all the help that if offered, as long as it does not come with strings or a price you cannot manage.
Be at peace that you have changed the tide of things, you will get there. Maybe this baby will part of that change. If you can do this, maybe you can do anything.
Bless you Bright - do not be drawn into their muddy puddles but go and find the sunshine you.