She may want to contact Liberty Sailing Club.
They race J27's in center city Philadelphia.
Drexel and Penn have dinghy racing clubs at Corinthian Yacht Club in Essington.
Philadelphia has a large number of very competitive sculling and dragon boat clubs.
Larger boat racing (for me your boat is large), is rare on the Delaware River.
1970 Havsfidra 20 by Fisksatra
On the Delaware River at Fox Grove Marina Essington PA