The woman found dead in a house in Teesside has been named as Christine Henderson.
Ms Henderson was discovered in an address on Cherwell Terrace, Middlesbrough.
She had recently lived in the Hartlepool area.
A post mortem concluded the 50-year-old died of stab wounds.
Police continue to question a 47-year-old man in connection with the incident.
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Durham Crown Court heard how Sarah Louise Fettis approached the woman after spotting her in a pub and began shouting and swearing at her.
A judge said adoption would give the baby the "best prospect" of growing up in a "safe and secure" way.
41-year-old Jayne Maughan from Middlesbrough used the £15,500 to fund her spending habits.