The father is on trial, but defense attorneys say the mother is the one who deserves more scrutiny in the killing of a 5-month old baby last fall at Edgewood Homes in east Lawrence.Attorneys for 27-year-old Jay D. Decker laid out their side of the case for the first time this morning during opening statements of Decker’s first-degree murder trial in Douglas County District Court. Decker is charged with killing Risha Lafferty, who was found dead the morning of Oct. 14 with signs of repeated abuse: bruises on her head and chest, a skull fracture, and injuries in her eyes consistent with being shaken.But defense attorney Mark Manna told jurors the evidence won’t be able to answer what exact injury caused Risha’s death, when the injury was inflicted, or who caused it. He said the girl’s mother, Brandi Mae Hendrickson, had more motive and opportunities in the hours leading up to Risha’s death to cause her injuries.”The evidence will show that more control means more opportunities to cause a fatal injury to Risha,” Manna said.Decker called police to Edgewoood around 8:20 a.m., not quite an hour after Hendrickson clocked in to her temporary job at Amarr Garage Door. He initially told officers that he had been lying next to Risha on a mattress- about 6 inches off the ground- and that when he rolled over, she fell off the mattress, cried for about 20 minutes, and stopped breathing. He later added that he had given her a bath “to calm her down” after her fall and that she had begun wheezing. He also told officers that she had fallen off the couch two to three days earlier and that he had grabbed her by the throat to catch her.In her opening statement, Assistant Dist. Atty. Amy McGowan cited a series of at least five incidents in the weeks leading up to the death in which Risha suffered injuries while under Decker’s care, all while Hendrickson was at work.She said medical evidence will show that, even though some of Risha’s injuries were days old, she suffered a skull fracture and was shaken shortly before her death. But Manna questioned the credibility of Hendrickson, who was charged with felony child endangerment but reached a deal to plead to a misdemeanor in exchange for testimony against Decker.Among the points Manna cited:¢ Hendrickson never told police during 14 hours of interrogation that she awoke during the previous night about 2 a.m., heard Risha cry out, and saw Decker coming from the baby’s room. The first time she told that story, Manna said, was when she took the witness stand earlier this year at a preliminary hearing.¢ In the hours leading up to Risha’s death, Decker was alone with the baby for a little more than an hour. By contrast, Hendrickson was alone with the baby for five hours.¢ Even though Hendrickson initially told police that the baby had been healthy before she left for work that morning, she told a supervisor at work that Risha had a fever and had been vomiting. At preliminary hearing, Hendrickson testified that before she left for work, Risha was moaning and her eyes were fluttering open and closed– a sign, the defense will argue, that she had suffered a “neurological trauma” earlier that morning or the night before. The trial is expected to last one week.”You yourselves get to judge, as the finder of fact, who’s telling the truth to you,” McGowan told jurors. -Contributed by Eric Weslander.