That does look like a teddy.
Seems strange to me that a 27 year old woman would sleep with her mother and father. Would rather sleep in my own bed to be honest.
Thought Sheila and June didn't get along.
Do you not comprehend relationships within a family ? You say Jeremy had not spoken to his mother for years - but he was a regular visitor to the farmhouse and a share holder in their businesses at age 24.
June helped out Sheila all the time - but yes they had their UPS and DOWNs - that is what happens in families some times . Colin describes happy family times and unhappy family times - I think that is quite normal . Colin is someone who knew the family and if there is a book you should read perhaps that is one that might give you some insight.
If Sheila was depressed while she was in the house then perhaps she did turn to her parents? Perhaps she found them controlling ? Perhaps she found her mother interfering and judgemental at times but there are happy family photos as well. Nothing is so black and white.