tā zǒngshì fēngfengdiāndiān de, ràng rén zhuōmō bù tòu.
She's always acting crazy, making people unable to figure her out.
Tips
grammar
This is an AABB reduplication pattern (疯疯癫癫 from 疯癫). The second syllable of each pair often becomes neutral tone in speech. AABB patterns add a casual, vivid tone.