8th lord is always Malefic, therefore in her horoscope Mars is most malefic planet. It is posited in the 2nd house therefore she should use her mind before she speaks. Can say things and repent later. Mars aspect on the 5th house is not good for the 5th house. Problems in education, love and children can be there.
8th lord becoming exalted in Navamsha means that it is malefic but its energy may not extremely bad.
It is like saying that Mars can give accidents, but injury may not be much. I hope you understand