An adult should not be charged with "sexual abuse" if teenager consented and instigated

A friend of mine was currently put in a terrible situation. She is a single mother of an 8 year old daughter. She lost her husband (her daughters father) just a few years ago. She has been diagnosed with severe depression, anxiety, and PTDS. She has had these issues most of her life, but the PTSD was recently diagnosed. For many years she experienced dissociation (disconnection from the world), but was not aware of what was actually happening to her. She was going through one of the hardest times of her life, as she was missing the love of her life, trying to maintain a home, animals, and a daughter, and also having to sell her house. The house she had lived in for the past eight years. This was a traumatic experience for her considering all her memories had been stored in this home. During this time a teenage boy entered her life. He came to her with advice because his parents didn't show any interest in his life. This teen had been doing drugs, and having sex since he was about 11 years old. He was VERY experienced and knew how to manipulate people to get what he wanted. While this 30 year old woman was aware that any kind of sexual interaction was illegal, she ignored his first advances and told him it was wrong. With her mind in a very dark place and extremely vulnerable, the boy managed to talk the woman into believing that she would not get in trouble and that everything would be okay. For the first time in a very long time the woman felt comfort and loved, and that he actually cared about her happiness. The two started having a relationship which lasted only a few weeks until the woman got arrested. This woman had zero criminal history, was an amazing mother, and had a heart of gold. She helped everyone that ever came to her, and even those who did not. She was a regular volunteer at soup kitchens and feed my starving children. Upon being arrested she had to spend two weeks in jail. Two weeks away from her daughter which was the longest amount of time she had been away from her daughter since birth. After being bailed out of jail she admitted herself into an inpatient treatment to get help for her mental problems. She stayed in the hospital for 2 weeks then when she got released she went on to doing the intensive outpatient treatment for 6 weeks, then therapy. She also enrolled for a Christian college, and has grown in her faith. She has turned her life around. She had been dealing with the case for about a year. During this time, she was unable to attend her daughters school or events, and had a curfew. This was heart breaking for both her and her daughter. Considering her child's father had passed away, she was the only parent that could attend her things, and the court wouldn't even allow her to. The prosecutor offered a plea deal of 18 months of periodic imprisonment, 30 months probation, and life time registry as a sex offender. This means she can never again in her life attend any of the special events her daughter is involved in which not only effects herself, but her daughter as well. As for the boy, he continues to do many drugs, break laws, and manipulate girls of all ages to have sex with him on a daily basis. This boy needs to be punished for his actions as well as the adult woman. My friend owns up to her mistakes and completely admits she was wrong and should have known better, but in the state of mind she was in, her judgement was very impaired. She should NOT be charged with sexual abuse, considering all these circumstances. Her and her child should not have to have a lifetime sentence because a manipulative teenage boy took advantage of her when she was clearly not in her right mind! I am so outraged by this situation considering I know what an absolutely amazing woman this lady is and how much she has done for society and her daughter. Many other adults have also been in a comparable situation and these poor adults have to suffer the rest of their lives as well while the one who actually did the manipulating is treated like a victim and that they are completely innocent. That is down right wrong.