Describe the mood or ulterior motive of the character in the given excerpt.
From the given excerpt, the character appears to be uncertain and hesitant about something. It is difficult to determine an ulterior motive from this brief excerpt alone.
Excerpt: "I'm not sure this is a good idea," she said.
Below is an instruction that describes a task, paired with an input that provides further context. Write a response that appropriately completes the request.

### Instruction:
Describe the mood or ulterior motive of the character in the given excerpt.

### Input:
Excerpt: "I'm not sure this is a good idea," she said.

### Response:
From the given excerpt, the character appears to be uncertain and hesitant about something. It is difficult to determine an ulterior motive from this brief excerpt alone.