You can see it bleeding into the image itself but it won't show up under the text. If I change the background to black it shows up but I want it white. I do have the text as the top layer and I've tried adjusting the settings as well as the blend mode. The purple on her shoulder is the glow.
Change the Blend Mode in the Layer Style dialogue window for the Outer Glow and you should be able to find the effect you're looking for.
I actually was just getting ready to say that it appears when it's under the darken modes lol.