Did the doctors say where they think the fluid is coming from, i no sometimes women can have cyst(ovarian), and they leak. I would also ask the dr if it is possible to get sample of fluid if it doesnt threat the baby or your daughter.
I will keep you guz in my prayers
when i had my first miscarriage in feb 08 i had some fluid on my pelvis which they didnt understand when they did an ultrasound they thought it may have been an ectopic pregnancy to start with. but because i was loosing tissue and clots and bleeding quite heavy they ruled ectopic out.they sent me home from hospital after a couple of hours then had to go back 10 days later for another scan everything had come away (id a natural miscarriage) and the fluid around my pelvis had gone also. the only thing they told me they had thought it could of been but they were very uncertain could of been a little unrine that had leak from my bladder. but i dont really no. i hope this has been a liitle of use to you and your daughter. I hope everything will be ok let me no my thoughts are with you both
emma