Sihle studied National Diploma in Musical Theatre at Tshwane University of Technology (TUT), Arts Campus.
Sindi had a role on Mzansi Magic telenovela Inkaba as Pru. She also played the role of Qinisonon SABC1 drama series, Room 8. In 2015, she landed a role on SABC1 drama series Uzalo as Nosipho.
She was a contested of season eight of M-Net’s 2012 South African Idols which was won by Khaya Mthethwa.
In 2011, she was the cast of the Broadway Musical, Walt Disney’s The Lion King which tour Singapore.
Sihle won a Sabela Award for best support actress at the 2015 Durban International Film Festival.