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Thomas Davis ' estranged wife, Kelly Davis , was arrested earlier this week ... after she allegedly attacked a woman for hooking up with the former NFL superstar.

An attorney for Kelly, though, tells TMZ Sports the allegations are "false." AP

Court documents we obtained state Laura Watterson , a chiropractor, accused Kelly of hitting her multiple times at her office in Charlotte, N.C. on Aug. 26 ... after she says Kelly thought she had been hooking up with Thomas.

According to the docs, Kelly began screaming at Watterson while the doctor was with a patient ... and when she was asked to leave, Kelly socked Watterson in the chest. Getty

Then, Watterson wrote in the docs, "As I tried to guide her out the door of my office, she hit me and knocked my glasses o

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