Write SQL query to solve given problem: State number of legislators who are not the senator among female legislators.. Keep the solution inside sql tag ```sql [SQL-Query] ```
SELECT COUNT(*) FROM current AS T1 INNER JOIN `current-terms` AS T2 ON T1.bioguide_id = T2.bioguide WHERE T1.gender_bio = 'F' AND (T2.class IS NULL OR T2.class = '')