Fill in the blank (_) in the following sentence from the following choices.
Sentence: Mary bought a brand new leather couch, whereas Emily didn't, since _ hates the smell of leather.

Choice 1: Mary bought a brand new leather couch, whereas Emily didn't, since Mary hates the smell of leather.
Choice 2: Mary bought a brand new leather couch, whereas Emily didn't, since Emily hates the smell of leather.
Which of the choices is correct? Respond with only "1" or "2" and no additional text.
2
2.