She was torn between her duties , the breaking up of her marriage and the death of her sister Catherine Petrovna in 1866 .
Alexandra Petrovna was deeply upset by her husband 's infidelity .
Alexandra Petrovna was torn between Alexandra Petrovna 's duties , the breaking up of her marriage and the death of her sister Catherine Petrovna in 1866 .
Alexandra Petrovna was deeply upset by her husband 's infidelity .