around 20 minutes into the episode the daughters are talking inside the house ... one minute the light switch is on the left of Theodora then it is on the right ..
The gas station the family stops at says "Mystik" on the gas pump. Mystic is an independent group of gas stations through the South East of the US, but is not present in New England.
When the Crane family talk about Luke having been in Amherst they pronounce it with a hard H. Natives of Massachusetts, or long time residents like Shirley would pronounce it with an almost silent H.