Complex sentence: An old acquaintance of Teal'c comes to Earth claiming to be able to communicate with her larval Goa'uld and even influence it to the cause of the Tok'ra and Tau'ri but her seeminlgy perfect solution to the Goa'uld plague comes with unforeseen consequences.
Split into simpler sentences: An old acquaintance of Teal'c comes to Earth claiming to be able to communicate with her larval Goa'uld and even influence it to the cause of the Tok'ra and Tau'ri. Her seemingly perfect solution to the Goa'uld plague comes with unforeseen consequences.