Typical liberal logic: put an unborn child, who only crime is existing, on the same level as a serial killer on death row.
Sadly, many Catholics and "Catholics" - such as Geraldine - either don't understand, or intentionally misstate, the Church's position. Abortion is OBJECTIVELY wrong; it is murder and is NEVER acceptable under ANY circumstance.
Capital punishment, however, is SUBJECTIVE under Church teaching. It is permitted under certain circumstances and whether those circumstances exist is a subjective call.
In other words, a Catholic or "Catholic" who supports abortion is committing a grave sin and is ALWAYS and AUTOMATICALLY wrong. A Catholic who supports capital punishment is NEVER automatically wrong and thus NEVER automatically sinful.