Merkle withdrew her name from the transfer portal and was previously committed to Maryland.
Konan Niederhauser has two strong performances in the G League Elite Camp.
The Nittany Lions' offense abandoned 15 runners on base during their regular-season finale loss.
The Nittany Lions secured the series victory on Saturday.
Three Nittany Lions posted multi-goal games.
Penn State took the series opener in its final Big Ten series.