We have been experiencing some problems with subscriber log-ins and apologise for the inconvenience caused. Until we resolve the issues, subscribers need not log in to access ST Digital articles. Engels said her daughter told her the incident happened on Sunday when Gabriella and two friends went to a hotel in Johannesburg's upscale Sandton shopping and financial district to see a young man they had met the previous day. South Africa's main police spokesman said officers were"still investigating" the case, which related to assault with intent to cause grievous bodily harm. After Gabriella had been taken to hospital, Engels said she Googled a picture of Grace Mugabe and showed it to her daughter and asked if she was her attacker. South African media published pictures of Gabriella with a gash in her forehead. But a log-in is still required for our PDFs.