What do to with a short story trilogy

When I completed writing “The Best Damn Thing” I thought I would just set it aside but only a day later I had the start of a continuation of the storyline through the eyes of another character.
And then today, I wanted to go further with a third version.

So the three are:
The Best Damn thing. —Michaela Leigh
Sweet But Psycho —Anthony Cox
Good For Me. —Randy Cox

The second story taking place in the high school years (starting in the junior year)
The third covers the Cox family and what brought them to bring Michaela into their family and how they deal with the social issues.

I just want to know if I should do this.