Why does the woman feel better today?

M: Why are you in such a good mood today?
W: (4) Well, yesterday, I decided to face my fear of heights.
M: I didn’t know you were scared of heights! Was it really bad?
W: (5)Let me put it this way. I’ve never seen a professional sports game in a stadium because I could never get myself to walk to the top of the stairs to sit down.
M: So what did you do about it yesterday?
W: I went sky-diving !
M: You’re kidding me! That sounds really scary!
W: It was scary, but it felt great, too.
M: Weren’t you scared?
W: Of course I was scared. But I had an instructor that went with me and that helped.
M: So have you cured your fear of heights?
W: I think so. After I jumped out of the plane, I realized that I should just enjoy life. Worrying about it or not doing things out of fear is just plain silly.
M: I’m impressed.
W: Are you scared of anything?
M: Well, sometimes I get scared when I’m in my apartment all by myself.
W: What do you think is going to happen?
M: (6)I always worry that the door is unlocked or that a window is open and that a stranger will come in and steal my things.
W: It sounds like you just need to be more careful.