Cathi,
You and your family have been on my mind all day. I think it's amazing that you have taken the time to update the Forum. I'm glad you can feel some comfort from all of the prayers and good thoughts being sent your way.
I realize you don't need this info just yet, but it was one thing I could do to help you out, so I did some more research on Service Flags. There are several certified manufacturers of Service Flags, and any one of them can help you out. But I found this site to be especially helpful, in that they spelled out the DoD regs a bit:
From Richard R. Gideon Flags:
"DoD regulations call for the GOLD STAR to be appliquéd over
the existing blue star so as to leave a blue border around the GOLD
STAR. As written this regulation assumes one is modifying an
existing blue star flag. For new GOLD STAR flags the blue star
is unnecessary; however, since the regulations call for a blue trim
around the gold star we finish our new GOLD STAR flags with a blue
border, thus meeting the requirements."
So it sounds to me like you can have your existing flag changed to add the Gold Star (over the Blue Star), or get a new flag, it's up to you.
I hope this info is helpful to you. I realize it's not something you need to deal with right at the moment, but I wanted to post it now so I didn't forget about it.
Prayers from Minnesota,
Jenifer