There are 13 E’s.

---e -- ---e - --- --e- -e--. -- --- ---'- --e -e-- ---,
--e --e-e-- -e-e- -----e-. -- -e--- --------

Letters available:
A B C D F G H I J K L M N O P Q R S T U V W X Y Z

Score:
Karen E(13) = 26