I do not think that she was in on the prank. Some people have nervous laughs when something troubles or confuses them. Or, she may have just found it funny and weird. But, forgive me. I cannot read minds. All that I can do is share my Ben & Jerry's ice cream.

My jokes would be more malicious and less playful

clever trick
I should do this sometime with my brother

Hah! I will be listening to what you have done on the next True Crime podcast.