I'm an adoptive mum, my son was relinquished by his dad when he was four. My son was then in foster care for four years, the decsion was made for adoption after a couple of years.
Has fostering with you maintaing contact not been discussed with you? My son saw his dad through the whole 4 years he was in care.
only you know the extent of your mental health issues, your chances of a complete recovery and what this means for your girls. If you feel that adoption is best for them then you are making a very brave decision.
My son is 13 now, we have had some intensive life story work over the last 18 months. I won't lie to you. He has been angry, grief stricken, it was emotional heart wrenching work. But he is OK. He has come to terms with it. He has a full sibling who stayed with dad so had lots of feelings about being given away. He understands that his dad and his other mum were both unwell, they loved him but they couldn't look after him. He worries about them, he loves his brother, there is no resentment that he got to stay with dad.
Who knows what the future will bring for you. As an adoptive mum, I hope that my son's birth parents can find some happiness and a future. They are still young, in their 30s. I know that birth mum is currently pregnant. I am genuinely pleased for her. I havent told my son yet, but I will in time, with the right support. He will be Ok with it.
With the right support, your girls will understand too. They may have their struggles with it but they will deal with it.
Can I suggest you contact After Adoption who provide support for birth families.
I wish you well in your treatment. In time I hope you will see a positive future for yourself. Whatever the future does hold, your girls are still part of you. You gave birth to them, and that will always be very precious.