If trying to reason with the person isn't working, and all else has failed...
You can just check out the spells section here, or if you don't find anything to your liking, design a spell for yourself. Spells do not have to be extravagant, or complex in any way. Writing them, as long as you have a set intention, can be quite easy.
Along side this, it is often times suggested you write your own spells because it suits your needs better as it was written for your specific needs, and it has that special signature of energy you put into writing it making the spell all the more effective.