1983
Molly had always seen Ron as a little more breakable than the rest.
Ginny was the rough-and-tumble kind, hyper and excited. Percy was always shut away in his own world, fascinated by the worlds in books. Charlie was particularly large for his age, and the twins nor Bill were breakable in any manner.
But Ron always seemed to react the most to the teasing of his siblings - most likely because he was the one most easily teased. His teddy bear taken, a few rather disgusting things set in between his bedsheets. The twins were most often the culprits, occasionally forming alliances with Charlie.
Perhaps she was spending more time attempting to stop the other ones from teasing Ron than actual time with him.