She has 1 serving of honey per cup of tea and she has 2 teas at night so she needs a total of 1*2 = <<1*2=2>>2 servings per night
There are 6 servings in 1 ounce and she has a 16-ounce jar of honey so that's 6*16 = <<6*16=96>>96 servings of honey
Her jar has 96 servings and she has 2 servings a night so 1 jar will last her 96/2 = <<96/2=48>>48 nights
#### 48