Trying to kill a sim plant

I don't know if it was a glitch (the death flower thing) but I eventually succeeded with fire... I know it sounds mean but my sim Sebastian Goth has the heartbreaker lifetime wish so I decided to have him marry 10 sims (one of each supernatural state) and kill them all with a different death... But my female plant sim did give me a hard time so much so that they had the time to celebrate their one year wedding anniversary. I'm also doing all this in my reaper house which is perfect with all those ex-wives hunting the ground (although they all show as fiancée mow LOL). Life is great with the no jealousy lifetime wish....

Thank you to both of you for the reply.

Next victims? No other then King Triton's wife...