I just don't know, because I don't drink alcohol, and I've never even tasted apple wine. (what a shame...) I have noticed what seems to matter is that it's a Gala apple along with the lime. No other type of apple I've tried gave the same results.
Why don't you ask your apple wine-making friend to brew up a batch made from Gala apples, then add a spritz of lime to a nice glassful (maybe even garnish with a little lime peel or wedge... pinky finger extended, of course) and then test it out? I bet it would work. Might even come out tasting similar to a screwdriver, depending on alcohol content.
If you try it and survive it, please do report your results. I'm quite curious, and I do believe what we're doing here constitutes hardcore scientific data.