Generally, pro life people arent going to find the violinists argument forceful: 1) the violinist is framed as being particularly valuable due to their talent, this is not a shared assumption between the two camps, and even if it was - every baby is a potential violinist.

2) the violinist is not offspring, and there is no parent-child relationship

3) extraordinary means were and are required to maintain the violinist, this is unlike a pregnancy - where extraordinary means are required to end it.