Of course, Gawain and Aunt Heidi's "spanking the child" (literally) is basically just intimidation. After all, Rebecca is already an adult now and even holds the title of Viscountess. Tying such a big girl to the beam and hitting her or chasing her around the room seems inappropriate—scolding her a bit usually suffices. Another reason is that Rebecca's head is truly hard; hitting her wouldn't have much effect, and after striking too much, one's hands tend to hurt...
Speaking of Rebecca's title, if we truly followed the kingdom's inheritance law and aristocratic hierarchy, after Gawain rose from the coffin and secured the title of Duke, Rebecca, as the family's current sole heir, should receive the Marquis title, one rank lower. Essentially, this carefree lass running around the territory causing trouble with her fireballs should actually be a Marchioness—who the heck would believe that when told?
