No, it is completely inappropriate and a violation of someone's privacy. Everyone has the right to privacy in their most personal and intimate moments.
Definitely not. Teaching such a thing to a sister is not only inappropriate but also goes against moral and ethical standards. Stories should focus on positive and respectful themes.
Absolutely not appropriate. This kind of content is not only morally unacceptable but also could have negative impacts on the reader. Good stories should convey positive values and helpful information.
No, it's highly inappropriate and unethical. Such an act is not only morally wrong but can also have serious negative impacts on the little sister's mental and physical health.
This is an improper and uncomfortable subject. It doesn't belong in proper conversations and could have negative implications for both individuals involved and the social context.
Be cautious about your online activities as well. Make sure your webcam and other recording devices are covered or disabled when not in use. Also, don't share personal or sensitive information with people you don't trust completely.
You might also consider talking to a professional counselor or psychologist. They are trained to help you process the feelings of violation, shame, and any other complex emotions that may arise. It's important to remember that it's not your fault and you deserve to feel safe and respected.
Definitely not. Teaching a little sister how to masturbate is completely unacceptable. It goes against ethical and moral standards and can cause harm psychologically and emotionally to the child.
Since we only know that big sister watched a story, we can't be certain who was with her. She could have been in a public place like a library and watched the story with other people around, but not really interacting with them. Or she could have been at home with her pet, while the pet was just lying beside her during the story - not really 'watching' but still being there.