A letter

The letter from Lucyna Herc to Emilia and Marcin Ratz in Russian, on a single sheet (of thick paper - wrapping paper?) folded to send in a triangle, the stamp survives. From the contents: It has been a long time since I have had letters from you - why? Admittedly, I have also rarely written lately, but you can forgive me, as I feel very badly. What is wrong with me, I shall certainly not say, but something is not right. Apart from that, everything is not bad'.