Is this a sign

If you confront someone in a normal voice and they start yelling and getting hostile does that mean that they’re lying? I confronted someone today and she started yelling and giving me attitude and denying things. I also put my hand up and she put her hand up, and her friend started jumping in on it. A period later she was getting mad and drinking her water and rubbing her hands. I also saw her in the bathroom a period after

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