Shamsa Enow Hussein (28), who has two daughters, aged 5 and 3, was abducted outside her home in Bulo Marer by three masked men on 5 August.
Her husband, Mohamed Isse Osman (31), told Morning Star News that he heard his wife and children screaming as he approached the house.
His captured wife was able to send him a text message that night; it said: "Please leave immediately because of what we believe. They have abused me sexually saying I am an infidel."
Mohamed heeded her call, taking their two children to another town. He has received threatening text messages from Shamsa's kidnappers, one of which said: "Your wife has told us all about your Christian involvement and soon we shall come for you too."
Al-Shabaab reportedly has a base in Bulo Marer. The Islamist militant group is fighting against the Somali government; it did control much of the south of the country but lost control of several areas following military intervention by neighbouring Kenya and other African Union troops.
Al-Shabaab's battle against Somali Christians, however, shows no sign of weakening. They monitor those suspected of having converted from Islam and kill them.
In June, Hassan Hurshe (28) was publicly assassinated by al-Shabaab militants in the town of Jilib.
Mursal Isse Siad (55) and Fartun Omar (42), a Christian couple, were killed in separate incidents. First, Mursal was shot dead outside his home in Beledweyne in December 2012. Then his widow was gunned down at a roadblock in Buulobarde in April as she was trying to flee with the couple's five children, who have been left as orphans.
It is so dangerous to be a Christian in Somalia that believers have to meet in secrecy. Apostasy, leaving Islam, is punishable by death, a penalty that al-Shabaab enforces extra-judicially.
Source: Morning Star News