Charles, once expected to be a first round pick, slid to deep in the second last Friday.
The decorated guard will likely hear her name called Friday night.
Missy Meharg's squad will welcome two top-10 players as part of the class.
Katie Benzan and Chloe Bibby will join the Terps next season.
The forward's decision leaves the Terps' frontcourt depth thin.
A projection from Joe Lunardi has the Terps near the bubble.
“I’m hoping that this season is a turning point for the program,” coach Brett Nelligan said.
The Big Ten and NCAA tournaments were cancelled due to the coronavirus outbreak.
The Terps look to get back in the win column and clinch a share of the Big Ten title on Senior Day