"Pretty mother" in Spanish is "madre bonita". It is pronounced "MAH-dray bo-NEE-tah". Please see this site for confirmation of the translation: http://www.answers.com/library/Translations
bonita
You can say "Eres bonita".
You can say "Ella es bonita".
In Spanish, you say mother as "madre" and son as "hijo."
mi madre
Madre
su madre
Tu madre.
Argentina's official language is spanish so mother in spanish is madre or mama
mujer bonita
There is no direct translation for "pretty please". Simply say "Por Favor" (please).
"Mamá, ¿ puedo?"