N for Felicia's Mom and E for Catty1:

"--- --- --e--- --n ---e t--e, -- -e ---e t-e ------e t- -----e t-e-."
---t ---ne-

Karen: T x 5 = 5
Felicia's Mom: N x 2 = 2
Catty 1: E x 10 = 10 x 2 = 20

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