Probably true. The only thing... why did Rebecca say her "daughter" was injured too - per Dog camp man. Or do you think she said "sister" and he mispoke since the sister was cut cleaning things up? Initially, many thought she was referring to GS (since she referred to MS as "son").
I think the dog guy is confused. Per family the 13 year old was injured cleaning up remnants of the chandelier and it was RN's sister. Per GS's friend, GS left before paramedics arrived so doesn't appear she was injured.