I know for a long time that I have a half sister

I know for a long time that I have a half sister in Indonesia. Once my father was very open about it when I was still living at home. With my mother it was different; she did not want to know too much about it, and still doesn’t. My father used to write many letters home to his parents. I've read almost all of them now. But nowhere he mentions  a daughter. I do not think anyone in the family knew.

The story of Willy's daughter and her father Bob de Kleijn (Cor in the Dutch Indies)

My father was serving obligatory military service. He was sent to the Dutch Indies, just like that. He was in the 7th December Division and embarked the ‘Tegelberg’ with his section 2-III Grenadiers Regiment in November 1946 to the East Indies. He was first grenadier and later came to work at the Intelligence Service. That had not been so pleasant, it turned out. But as children we learned little about this. When we, my brother and I, were still small my dad always told tasty anecdotes about the Indies. As children we had to laugh about that. But how happy his stories seemed to be, the reality must have been different. According to my mother, the first year of their marriage he slept with a knife under his pillow.

Only later, during my teenage years, my father attended Veteran’s Day for the first time. When he came home that night, he was really upset. Probably he did run op a war trauma overthere in the Indies. After Veterans Day he started to drink more. I was fourteen years old. And I started to address his drinking habits. And suddenly, I was seventeen years old, the great news came out. He said he had a child there, a daughter. He has seen the girl twice. The first time was at birth. And three months later again, when he visited the mother and his daughter during a patrol. He probably did not want to or could not take the mother to the Netherlands. I asked him about it that time, but he replied that it was not possible... To not completely abandon her, he has bought a small house with a piece of land for her so she could be self-sufficient. I'm not sure if ever there has been contact.

In the last four years of his life my father was very ill and suffered great pains. He sometimes said: "Maybe I deserved it." Because of the Indies. Yes, it had a very big impact on him.
He deceased a while ago, in 1995. From the moment my father became ill, the subject was not raised anymore. And so I hardly know more than what he told that one time.
In the past ten years it kept me very busy, also because my brother already died when he was 40. I would like to have an other brother or sister, and I have, just somewhere in Indonesia. I even have a very strong feeling that she lives in the Netherlands. Maybe not even that far from me. I wish I had asked him more. But I was seventeen when he told me about it and at that age you're occupied with other things.

I have seen the documentary Sir Daddy on television. I think it's a terrible idea that those children and their mothers had such a difficult time. I also think of my half-sister. I could not sleep for days and I was very emotional. I was not prepared at all because I did not know that the documentary would be aired and I fell in the middle of the broadcast. Bang! Then I thought: I must do something with it. I never really realized how it must have been for my half sister.
Reading the website Warlovechild that I looked for, has helped me. I am so glad to see that there are many others looking for their half sister or brother. I have little clues to search with. Through his letters I can trace where my father must have been. But otherwise I know nothing and I stand empty handed.

I have a picture, though. On the back is written: "For you, Bob. Hi, honey. Moria.” It is the only photo of a girl that I've found in his old stuff. Was this his girl and perhaps the mother of his child? That is of course quite obvious. A few months ago I raised the subject with my mother. But she got too emotional. She had also seen the documentary Sir Daddy on TV. "Let it rest, child," was her response. She was very curt. Later she got back to it. She finds it all terrible. But she also knows absolutely nothing. People just were not used to talk about such things. 
Maybe my sister ever reads this story. My father's name was Cor de Kleijn, but in the Duch Indies he was named Bob, as the piece of text on the back of the photograph reveals. His stb-number was 251111014. He was stationed on Java until late 1949 in various locations, including Soekabumi. He returned to the Netherlands by the end of 1949 with the HMS Johan van Oldenbarnevelt. Presumably his girlfriend was called Moeria, Moes or Moer. 

I feel I must keep searching. My father must have had many problems with not knowing who his daughter is. He always wanted a big family. I think that in his thoughts he often was with her.

Do you recognize yourself in this story, did you yourself had to leave a child in Indonesia? Or do you know someone who is looking for his child, his or her father, half brother or half sister? Or have found him or her?
Please let us know!