meantime , madame , who knew that from one day to the other she might expect to be removed from her command by the duc d'angouleme , by bassompierre , or by schomberg , who were all eager for her post , did but little , lost her days in wavering , and did not dare to attempt any great enterprise to drive the english from the isle of re , where they still besieged the citadel st. martina and the fort of la pree , as on their side the french were besieging la rochelle .