Oh come on. Jade wasn't that loud. She just wanted him to know she was enthusiastic about it. Imagine if she'd said it in a normal tone. That could have been misunderstood as reluctant or uninterested. "Stranded in the park? For days? Are they all right?" It would be tough to get enough food and water, wouldn't it? "Of course I'll help! I don't think I'll even need my equipment for that." Plus her equipment is probably not safe for Aries, being very high-tech and representative of civilization.