BOSTON—A former Boston College student pleaded guilty on Thursday to an involuntary manslaughter charge stemming from what prosecutors said was her role in encouraging her boyfriend to commit suicide through unrelenting verbal, physical, and psychological abuse. Inyoung You, 23, entered the plea in Suffolk County Superior Court in Boston after reaching a plea deal with prosecutors under outgoing District Attorney Rachael Rollins that could allow her to avoid serving any time in jail. Judge Robert Ullmann sentenced her to a 2–1/2-year suspended jail sentence and 10 years of probation and barred her from profiting from her high-profile case, prosecutors said. If she complies with her probation terms, she could avoid incarceration. Prosecutors said You sent 22-year-old Alexander Urtula in the last two months of their 18-month relationship 47,130 text messages, during which she waged a campaign of abuse and told him to kill himself and to “go die.” Urtula, of …