1. Economic:
The man may not be in the most secure financial position to support another person, let alone a family that may come in the future.
2. Distance:
The man may live too far to visit, and as a result, family would not be able to visit the woman.
3. Cultural:
The mother may believe the ethnic and cultural differences may be too much for her daughter and may not adjust well to her new situation.
4. Ethnic:
The mother may disapprove of the man and his culture and believes the man will not be able to provide for her daughter. The mother may also be racist against the man.