Repetition.....

So, my late stage sister is now singing "BA DA BA DA BA DA BUMP BUMP BUMP" to the tune of, Skip to my Lou, over and over again from morning till bedtime. She will also sing at the top of her lungs and bang on the wall with the bump, bump, bump. We now wear earplugs after listening to this for over a week non stop. The plugs do not drown out the singing completely, but it does muffle it. She will sometimes wear herself out completely and give a loud sigh, but after a few seconds, will continue. Of, course begging and pleading with her doesn't help one bit. She will look at me like I'm a moron. Suggestions???