I'd never heard of the Richard Grissom case. So I looked it up. Yes, I can see this as a possibility that whoever abducted Jennifer used this same method. Only down side to the theory is that I can imagine the abductor doing it after midnight, say, maybe 2-4 AM, when they would know she was asleep. This is when similar cases have occurred, like the East Area Rapist. Between 10 and 11 PM is riskier. But then we don't know for sure that it could have occurred between 10 and 11.
I also wonder if the person responsible has committed rapes prior to this and was not caught. That night he took it much farther. I have to believe LE looked at any unsolved sexual assaults in the past and tried to find a pattern.
I have never heard about Richard grissom but maybe the same method were used here. Now about the time ,if 10-11 at night is risky,early morning around 700 am is even more risky. But it is all depend on the circumstances. If an abduction happened in the morning and it happanned to be there are no people at the area its not more risky than any other time.I think the abductor knew not many people lived in Jennifer's building. I don't know if jennifer was the only resident in her building and where the apt was located in the complex, if it was one of the back apts ,if it was overlooked the pool or the clubhouse..
I think while watching jennifer he knew not many people lived in her building.he saw how many cars parked every night in the building and so he knew building is mostly empty .In he knew if the nighbors are at home and when they come back.
I can't recall if Jennifer's neighbors, if she had any ,were at their house the night before or early morning.