I think it could mean: a-She was a fool and she was in love and b-She was a fool when it came to love. (She was a fool in that 'game'.)
Could '1' be used in any other way? I think it could be used to mean: c-She was a fool because she was in love. But that is not what the sentence is really saying.
Maybe 'b' could also be expressed by: 2-She was a fool at love.
Gratefully, Navi.
Top answer
I'd interpret it as this: Love addled her brain. She was acting like a fool.
— AlpheccaStars
I'd interpret it as this: Love addled her brain.
She was acting like a fool.
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