Answer: she teaches Esperanza how to do housework and take care of babies. Actually, the scene where Isabel teaches Esperanza how to wash clothes is pretty hilarious: Then she started on the clothes. Esperanza was amazed
The description indicates the man is tough and rich. Tough because he has a square jaw and a scar above his eye. Rich because he has a diamond set into his scarfpin.
The other characteristics cannot be inferred based on this description.
