Charles scored 11 straight New York points in the fourth quarter for an 84-83 lead with 57.3 seconds left. After a timeout at 25.7, Seattle passed it around the arc and Jordin Canada missed an open 3-pointer from the top of the key. Alysha Clark grabbed an offensive rebound but her putback attempt rolled off at the buzzer.
Tanisha Wright added 10 points for New York (6-7), which has won three straight games.
New York trailed 70-60 after being outscored 30-19 in the third quarter, but the Liberty scored the first 10 points of the fourth to tie it.
Mercedes Russell set a career high with 19 points for Seattle (8-7). Natasha Howard added 15 points, six rebounds and four steals and Sami Whitcomb chipped in with 13 points.