Vusi approaches you for an advise. Mandla, her recently deceased husband , left his entire estate to his secretary, with whom he had an extramarital affair. Mandla signed his one page will just after the last paragraph with his intials and not his full signature. His secretary, Sandy, and his two friends. Tumi and Bongi, signed as witnesses. Vusi's friend a legal secretary, told her that Mandla's wife is invalid.
Discuss any claims that Vusi may have against Mandla's estate?