Twin sisters are recovering and sleeping apart for the first time in their 15 months of life after undergoing a six-hour separation surgery.

Nima and Dawa Peldon, of Bhutan, were born joined at the torso and shared a liver, but as they grew it became difficult for them to sit at the same time and stand.

Last month, the twins traveled to Melbourne with their mother courtesy of Australian-based Children First Foundation. This week, two teams made up of 18 specialists at Melbourne’s Royal Children’s Hospital carefully divided the girls’ shared liver before separating them.

The girls’ pediatric surgeon, Dr. Joe Crameri said the surgeons found no unexpected complications during the operation, and that they “feel quietly confident that we will have a good result.”

A post on the charity’s blog said that the girls’ mother, Bhumchu, has seen her girls post-surgery and given them each a kiss.

The twins are expected to head home with their mother once they’ve recovered.