Of course,this is the crux of the whole debate------------that Jeremy had been adopted. Blame that,shall we ?
Children learn from and are guided by their parents whatever the circumstances,and I would have said that Jeremy was June's favourite,whereas he looked up and respected his father as most balanced sons do.
Sheila had far more to chirp about than Jeremy did. I don't remember it spoken of that Sheila was as interested in baking,etc as her brother was. Neither did he seem interested in contacting his birth parents,which Sheila might have felt a pang about not knowing who her father was,among other things she'd been through and was going through at the time.
There was a whole multitude of problems in Sheila's short life which were enough to send the strongest person over the edge.
Both siblings were so different in every way,not because they were adopted because you can get this in bological families too,and this is where the skill of parenting comes in where each child is treated according to their character/persona. You can't expect clones.
Parenting doesn't come easy to many if the instinct isn't there as there's more to raising children than food on the table,clean beds and money. June and Neville were like the many--------clueless,but they did the best they could.
Unfortunately,what must have seemed like a disturbance wasn't just the adoption process,but the many different faces of au-pairs/childminders who would have had a different approach in looking after the children so that was another unknown area in their lives. Stability matters and counts for a lot in a child's life,growing up. Seeing mum ill,then being whsked off. The same instability that Sheila's twins went through.
It wasn't quite dysfunctional but it wasn't far off.