Sandercock committed very young when Coach Dean was still at the school. If you remember, she made the USA Junior National team. From what I heard, while playing as part of the National team, her mind started changing and she de-committed and then verballed and ultimately signed with Florida State.
One thing y’all may have forgotten about as well is that Millie Thompson, who is the #2 pitcher at Clemson had also verbally committed to JMU and did de-commit when Dean left.
So, I guess if everything would have played out with no changes, you would have had a Sandercock/Thompson rotation through next year and Thompson through 2023.