What Causes Personality Disorder Along With Slurred Speech?

Hello sir . Its relating to my aunt . She is 42 year old women . She had no major issues until last Wednesday . She started behaving strange . She blabbers . There had been some issues with her neighbour. Latley she was told by someone that her husband has an affair . They were one of the happiest couples i have seen. Ever since she heard this she had been behaving strange . she keeps saying i dont knw whats happening around me . Please throw light sir .