It's dishonest to lead someone on using the internet.
Jenna is trapped at home taking care of her disabled parents and socializing on Facebook.
Jenna wants to escape from her real life for a while.
Jenna joins an online D&D group and occasionally mentions details from her real life.
Jenna sets up a fake profile about how she's backpacking across the world.
Jenna feels less alone and like her life is less boring and stressful.
Jenna's Facebook friends begin to suspect something when she can never meet up with any of them.