SINGAPORE – A woman saw her boyfriend of nearly four years browsing his phone on the bed when she returned home from work and became aggrieved over his failure to contribute to the rent.In the ensuing argument, Li Ye, a Chinese national, grabbed a knife from the kitchen counter and stabbed 56-year-old Lim Lai Guan once in the chest.On July 24, Li, 40, was sentenced to 12 years’ jail after she pleaded guilty to a reduced charge of culpable homicide not amounting to murder for killing Lim at a Citygate Residences condominium unit in Beach Road.Li was a performance artiste…