Since Corfman was in school, there would have been only 3 days available between Feb 21st and March 4th for the alleged rendevous.: Feb 24, 25 and March 3.
So it had to be 2 of those 3 days.
Now there's no way she was going to get out of the house at night so this had to be during the day. Yeh right...he's going to pick her up around the corner in a Town that knows this hometown boy like one of their own.
Good sleuthing.
Now we find out the intersection she mentioned was 1 mile away. So she what, walks a mile to meet him each time.