I agree that you should NOT trust her. This is how they got my aunt in. She always detested the JWs. My family worked on the teens, then the husband ... several years later, she succumbed to the pressure of being the only non-JW, and (unhappily and under pressure) got baptized at the age of 45. She called me up the week before her baptism, and tearfully said goodbye.
Yes, I just thought that maybe your daughter needed the few extra bux helping auntie out around the house, and it would be soooo easy to find her a light housekeeping job once a week for cash. There's always someone looking for a bit of extra help when both partners are working.
Keep up the fight!
tal