Hillary Clinton has been a woman of few tweets since launching her Twitter account in June. 
But the former secretary of state made a return Tuesday to offer well wishes to former South African President Nelson Mandela, who is in a hospital and may be near death. 
Clinton referred to 94-year-old Mandela by his clan name, Madiba. 

Nelson Mandela -- who was imprisoned for 27 years in South Africa when he challenged white minority rule and became the first democratically elected president in 1994 -- remains in critical condition. 
Read More: Nelson Mandela In Critical Condition
“The doctors are doing everything possible to get his condition to improve and are ensuring that Madiba is well-looked after and is comfortable. He is in good hands,” South Africa’s President Jacob Zuma said in a statement.
One media report said Mandela suffered a heart attack, but Zuma knocked down this rumor, saying there was "no truth at all in that report."