There are 4 T's, and 1 B.

Life is like a dog sled tea-. If -ou ain't the lead dog,
the s-ene-- ne-e- -hanges. b- Le-is G-i--a-d

Letters available:
C J M P Q R V W X Y Z

Score:
Karen E(13) = 26
-*BaSim*- A(6) + I(7) + H(3) + L(5) + F(2) + B(1) = 37
**Rottieluver** O(3) + U(1) = 8
Daisy's Mom D(5) + S(5) = 10
ShepherdLover G(4) + K(1) + T(4) = 9
zippy-kat N(4) = 4