I’m guessing the person behind the killing didn’t want her body left at the house where the kids would find it.
Unless she just encountered a crazy stranger when she arrived home.
But who would take a body away in a hockey bag?
A perp who needed to leave a trail so the body would be found while the person who hired the perp was still out of town...?
I'm going out on a limb here, but my guess is that it would be a total and complete kook, especially given the bag was leaking blood the entire way.
A hockey bag seems to be an odd bag to house a body. Does her younger son play hockey? Since Orsolya Gaal was out late with “friends” while her husband was away with their older son, it appears someone was very angry with her, angry enough to kill her. She probably knew her killer.