I'm not typically fond of drawing the Gromble out of character, but Boogle isn't really a human, so maybe the Gromble wouldn't be repulsed by her. Actually she IS a monster (penanggalan) and her "human" body is just a doll form... and considering Gromble once accepted a human-looking monster named Blastoog... maybe the Gromble -could- actually love her in reality and would provide her comfort...
This is so darned cute..and I love all the details you add to each of your pictures/drawings you post...(still think you could be a writer so easily.. )