Suzanne I am sorry this has been a very disappointing experience so far. Please stick with it.
I am an adoptive parent to a little boy. His birth mum sends lovely letters and we send back (I hope) lovely letters too.
We also send a card, as does she.
We send photos that she can view at the council offices. This arrangement is because some birth parents have put the photos sent by adopters on social media. So to avoid this the photos are viewed and not given.
I think for me this engagement means I can know she wants to know about him as he develops and grows. She knows he is alive and well. I know she is alive and well.
We are allowed to ask and answer questions. She has not really asked me much/anything or answered my questions. But I still feel it is of huge value.
It might be that a charity like after adoption could help you with this aspect of life without your child. They might be able to give support.
I try to store up bits of info to send, throught the year, so writing the letter is less hard.
In a funny way it makes me feel connected to his birth mum. When a letter arrives I feel genuine excitement.
Please do not give up but please find support from you.
I would really be surprised if social services ever fakes a letter like this. There is no point. They could just say no letter was sent of one did not arrive. I would imagine this would be a seduce misconduct in faking any document.
Please get support for you.