This is a truly baffling case so far!
Here is the Nancy Grace Transcript for Halloween night - it's got a ton of details and an interview with her sister.
http://transcripts.cnn.com/TRANSCRIPTS/0510/31/ng.01.html
GRACE: And how far was the superintendent`s house from her house?
GATTIS: Just a few miles.
GRACE: Are you talking five, 10, 20?
GATTIS: Maybe five.
GRACE: And did she live in a home or an apartment?
GATTIS: She lived in a home.
GRACE: Anita, was the home locked from the inside when the police got there?
GATTIS: Yes, it was.
GRACE: So all the doors were locked?
GATTIS: Yes, ma`am.
GRACE: And do those doors lock automatically when you shut the door?
GATTIS: No, they did not.
GRACE: Did she have a car garage where you park your car and you close the garage door with like a Genie?
GATTIS: No, her garage was opened on two sides.
GRACE: Open on two sides, car parked in the garage?
GATTIS: Right.
GRACE: Any forced entry?
GATTIS: There`s no evidence of that.
GRACE: And the only thing amiss was the clock radio at her bedside was under the bed. Was it still plugged in?
GATTIS: Yes, ma`am.
GRACE: Still plugged in, but six hours later?
GATTIS: Correct.
GRACE: And the lamp by the bedside cracked but still on the bedside table?
GATTIS: That`s correct, too.
GRACE: Also, Anita, her clothing that she wore to the party that evening, it was found in the home?
GATTIS: It was. It looks like that she changed into maybe the clothes she was going to sleep in that night.
GRACE: Why do you say that?
GATTIS: Well, she had made the comment that she was tired and was going to go home and watch the video from the pageant. She normally put on sweat pants and a t-shirt to sleep in.
GRACE: Now, she told you this?
GATTIS: No, this is what she told the people at the party she was at.
GRACE: Oh, OK. Now, was she drinking at the party?
GATTIS: Tara does not drink. She never has drank.
GRACE: So her clothing, Anita, was it laid out, like, you know, when I take my clothes off in the evening, I normally put them away or throw them in the dirty clothes, one or the other. Were they put away neatly, or were they found lying on the floor? Where were they?
GATTIS: The shoes were found lying on the floor, which a friend of mine told me was very unusual, because they were fairly expensive pair of shoes. She usually boxed them up and put them in the closet. The rest of her clothes were lying piled on a chest.
GRACE: Piled on a chest. Would that be normal for her?
GATTIS: It appears so. There were more clothes on that chest, also.
GRACE: Yes. Now, Anita, you stated she normally sleeps in sweat clothes, shirt, you know, socks maybe. Did you go through her home looking? I remember the Laci Peterson case. Her family went through looking for things, because they were familiar with her habits. Did you do this?
GATTIS: I have somewhat. But she has so much clothes it`s really hard to tell exactly what`s missing.
GRACE: What`s interesting to me is her car`s still there. Only missing is her purse and her keys. Wasn`t her cell phone put back on the charger?
GATTIS: Yes, ma`am. It was by her bed, where the lamp and the clock were.
GRACE: Still sitting in the charger?
GATTIS: Correct.
GRACE: You know, I just want to ask you one more thing about these keys and this pocketbook. Did she normally put her keys, like, on the table separate from her pocketbook, or would she put the keys back in her pocketbook?
GATTIS: Back in her pocketbook.
GRACE: So the fact that she had keys and pocketbook missing could mean she simply grabbed the purse and left.
GATTIS: I guess that`s so.
GRACE: And, Anita, one more thing about the home. The lights in the home, were the lights on or off? And is she an energy freak like me? Would she cut off all the lights but a night light or what?
GRACE: She left a porch light on. And the lamp by her bedside table she always turned on so that her neighbors would know that she was home. And that had not seen that lamp on since Friday night.
GRACE: So it was on Friday night?
GATTIS: It was on Friday night. It never got turned on Saturday night.
GRACE: You know, Anita, that is a very interesting fact. Listen, when she would come in, would that bed light already be on or would she go in there and cut it on?
GATTIS: She would go in there and cut it on. That was her normal habit.
GRACE: Doesn`t it sound to you, based on that fact, that someone was either in the home or followed her into the home. And when she went to the bedroom to flick the light on, the neighbors never saw that light come on?
GATTIS: That`s what they`ve told me. Yes, ma`am.
~much more at link~