Well, Sarah Young did choose to be a member of the PCA, a decision that might be examined. She became a member via her attendance at Covenant Theological Seminary and then marriage to a fellow student.

But I'm not yet seeing what denomination this school was when she attended in 1977-78. It seems to have drifted from the Evangelical Presbyterian Church (EPC) to the Reformed Presbyterian Church, Evangelical Synod (RPCES), then the PCA in 1982.

https://en.wikipedia.org/wiki/Covenant_Theological_Seminary