disappointment blvd story Riddles

You live in a one story house made entirely of redwood. What color would the stairs be?

What building has the most stories?

A fireman is running to get a net under a lady who looks like she might jump off the balcony of her 20 story apartment building. There is nothing below her except a 20 story fall. The fireman is still 100 yards away when she falls and can't nearly get there in time. The woman is not hurt more than a bruise. How is that possible?

A woman killed her own sister. During the interrogation, she told a story that she just attended her own mother's funeral few days before the crime took place. While at the funeral, she said that she met this guy whom she did not know. She thought this guy was amazing, so much her dream guy she believed him to be just that! She fell in love with him right there, but never asked for his number and could not find him. A few days later, she killed her sister. Although this woman has confessed to the crime, police are still intriguing by the story, especially because she won't tell them her motive. Hearing this tragic story, with his psychological education background, Detective Anderson easily guessed the woman's motive. Why the woman killed her own sister?