J.P.
I am a grandmother with nothing better to do than
"clean up their messes". Hopefully, you have communicated
your concerns to your mother and she understands your
fears. She likely does not want a full time child living
with her unless an emergency situation requires it. It
is good for your mother to get a full taste of what it
would be like to raise another child during this summer
visit. I think your chore list is very reasonable. You
are being a responsible parent by making these requirements. Maybe your daughter and son need a family meeting and you can explain that families are like a team
in which each have responsibilties that come with age.
When someone doesn't pull their load, others have to take
up the slack. Like Grandma is likely doing. Reason with
her. The games, computer, and tv are priviledges and
must be earned. Life is full of choices. I wish you
a lot of luck and discernment. If there is any yelling
involved, I would make a point to talk softly, almost a
whisper where she needs to try to hear your words. It
helps you keep your patience in control too. We can only
control ourselves and be a model to anyone watching.
It will get better. Stay tough and keep up your expectations. They will become great adults.