Answer:
A. Bitter or D. disappointed, both are reasonable answers.
Step-by-step explanation:
We can tell that her response it bitter because she is saying "as usual" which indicated that something like this has happened before. then when she says that the story is probably "just a cover so that she doesn't have to say she's too afraid to ride a scary ride" it indicates that she is mad/bitter, because as usual, Livvie makes something up to get what she wants, or to get out of something, and Abby doesn't like that.
Or we can says she is disappointed because she has to do what Livvie wants instead of doing what they were originally going to do.
-Hope this helped & Happy holidays!