reinvention
Does "her belief in reinventing herself through her art" mean

a) her belief in changing herself by her art

or

b) her belief in changing her art

Question

reinvention
Does "her belief in reinventing herself through her art" mean

a) her belief in changing herself by her art

or

b) her belief in changing her art

Answer

Your first interpretation is correct. The reflexive pronoun "herself" is only used when the subject carries out an action on "itself", that is on the subject. So what has to be changed here is the subject, the female referenced by "her."