When the general counsel of Legend Natural Gas called Vinson & Elkins partner Robin Fredrickson to see if she could represent the Katy-based private company in a shale asset acquisition, Fredrickson had to turn down the work.

Legend is a client, but Fredrickson already was representing the seller, Range Resources Corp. of Fort Worth, in the sale of the Barnett Shale properties. The Houston lawyer says Range Resources engaged her before it took bids for the asset sale, and, as it turned out, her client Legend was one of the bidders.