This is somehow better or worse than 34 pt mockingbird having the same?
Well, 19 Defense in close-combat is totally wrong for Mockingbird, too. To be fair, I think CR wasn't updated in the rules to add +2 to defense when she was created.
It's just too high for Mockingbird or Batgirl, IMHO. I think we have close to 50 versions of him, and we only have 3 Spider-Man figures with a Defense value that high– and he's known for being pretty darn hard to hit.
If there's one thing Batgirl is known for, it's being easy to hit at close range.