Balanced Hand

Balanced Hand

N
W   E
 
S
K J 9 7
K 9
Q J 9 8
Q J 7

Dealer:

South

W N E S
1
Pass Pass ?

Partner may have a balanced hand with no biddable suit. She may be too weak for a 1NT overcall (16-18 points), or have no diamond stop (very likely looking at our hand).

What should we call?