A Bible-studying South Carolina woman who once griped online that her hubby was unfaithful was charged with murder \u2014 after admitting to poisoning him with eye drops, officials said.\r\nLana Clayton, 52, was booked Friday after an autopsy uncovered a high amount of tetrahydrozoline in her husband\u2019s body, officials said.\r\nThe chemical is found in over-the-counter drops, such as Visine, and reduces redness by restricting blood vessels. But when it\u2019s swallowed, it acts as a neurotoxin and attacks the nervous system.\r\nLana Clayton admitted to spiking her husband\u2019s water with eye drops over a three day span, between July 19 and 21, the York County Sherriff\u2019s office said.\r\nSteven Clayton, 64, was found dead July 21 in their palatial home, worth over $800,000, in Clover, South Carolina, about 30 miles southwest of Charlotte, N.C. It appeared he had fallen down the stairs.\r\nThe home was designed as a copy of George Washington\u2019s Mount Vernon estate, and Steven Clayton had carefully worked to restore his property,\u00a0according to The Herald of Rock Hill, S.C.\r\nAn accountant, Steven Clayton was the founder of Physical Therapy Resources, a national company with branches throughout the United States. He retired in 1995,\u00a0according to his obituary in the Herald.\r\nHis funeral was held in the home\u2019s back yard on Aug. 4, before the autopsy results revealed the cause of death,\u00a0according to WSOC-TV in Charlotte.\r\nOne neighbor said she knew Lana Clayton from a neighborhood Bible Study group.\r\nA friend told a local newspaper that Lana worked in nursing for the VA hospital in Charlotte. Police have not released a motive for the crime.\r\nShe posted a comment on what appears to be her little-used Facebook page in March 2010 that suggested her husband was unfaithful. \u201cMy husband is not a drunk he had an affair. However, he is the father of my children and my kids look at my Facebook. Soooo. I do appreciate the support though.\u201d\r\nShe had already started legal action concerning the estate, which also included a lot next door to the home worth nearly $400,000, the Herald reported.\r\nNeighbor Ken Sanford told the Rock Hill, S.C., Herald that \u201cseemed like a sweet lady,\u201d and \u201cSteven was very proud of her accomplishments.\u201d\r\n\u201cI am just stunned,\u201d Sanford said.\r\nLana Clayton was also charged with unlawful malicious tampering of food. Because she is charged with murder, she will not be released on bond. It\u2019s unclear if she has yet named a lawyer.\r\nAn Oklahoma native according to her Facebook page, she has no prior criminal record in South Carolina, the Herald reported.