Here is the most complete article I can find about Dinda's baby's birth. There is also an option to vote on the baby's name. The article is in German, but I've provided a (rough) translation below:
http://www.zoo-rostock.de/de/unser_...g_utan_nachwuchs_ist_da_und_sucht_einen_namen
“Orangutans: Now Dinda is also the mother of a little girl, Sabas is a father for the second time.
Early on Monday at 8.15am came the perfect joy. Orangutan lady Dinda (11) brought her first pup into the world and took care of her baby from the first second, like her older sister Hsiao-Ning (14). A big gasp of relief came at 5.45pm, as the Zookeeper in the Darwineum clearly saw the baby sucking from the mother’s breast for the first time.
‘Mother and child are in good health. The birth proceeded without problems. The baby welcomed the world with loud calls,’ said the curator Antje Zimmermman, pleased and relieved, ‘meanwhile, we can observe whether the little girl is drinking regularly and well. Therefore, we can see how things pan out, and that the mother and baby relationship develops optimally. The baby weighs about 1000g, it is a very strong baby.’ The father is the male Rostock Orangutan birth Sabas (14). ‘When Dinda comes to the enclosure and shows her baby to the visitors, we can leave the young mother alone,’ said Antje Zimmerman.
The sister’s happiness is now complete
With our orangutans, Dinda is now the happy mum of a little girl. Our Zookeepers have chosen five names for the baby that was born on February 5th to be considered and now it’s your turn: what should the third Orangutan girl in the Darwineum be called?
Overview of the names:
Minah (meaning “Honest”)
LinTang (meaning “Star”)
Santi (meaning “For the Collective Good”)
Luh (meaning “Little Girl”)
Tanah (which is the name of a Malaysian town)”
Friends of the zoo can help choose the Name
Surya, Niah and what shall the third Orangutan girl be called? The Zookeepers at the Darwineum have had many ideas. The decision should, as with the first two young animals, lie with friends of the zoo. They can vote for five Indonesian names from the place of origin of the red “Forest people” on our website and via Facebook.
Choose from: Minah (“Honest”), LinTang (“Star”), Santi (“for the good”), Luh (“little girl”) or Tanah (the name of a city). Subsequently, the announcement of the selected name for the young female resident of the Darwineum will take place.
The Parents: New Mother Dinda and Father Sabas
Dinda came on 10th December 2015 from England to Rostock Zoo, at the request of the co-ordinator of the European Endangered Species Programme (EEP) for Orangutans. She was born on 6th July 2006 at the Primate Rescue Centre Monkey World in Wareham, Dorset. Her father is Tuan and her mother is RoRo. Dinda, like her full sister Hsiao-Ning, was hand-raised. Both initially grew up in the Orangutan Kindergarten at Monkey World. While Dinda is very reluctant and shy, her sister has developed into a self-confident orangutan lady. The two now share the father of their children: Sabas is also the father of Hsiao-Ning’s daughter Niah, who was born on 24th July 2017 at Rostock Zoo. So Dinda could enjoy the past half year at her sister’s “mother’s class”. For Sabas, he is the father of a second young animal. The small harmonious group of the young boss Sabas with his females Dinda and Hsiao-Ning, as well as the “family pet” Niah and Dinda’s baby, has grown to five family members.
In the neighbouring enclosure live Sabas’ parents Sunda (41) and Ejde (37) as well as their child Surya (4) and Miri (13), who is expecting Ejde’s baby early in the year. The Zoo visitors can then experience up close a total of four young animals being reared in the “Tropical Hall”.