I see the error of your ways:
In "She is the one who took," she is still that person who took the photos, even though the taking of pictures happened yesterday. Yesterday only sets the time frame for the action she performed. When she did does not matter. What counts she did, so she is the one who did it.
1.she is the one who took the picture yesterday.
2.she is the one who took the picture.
#1 carries more info.
Student or Learner