how many females are in OT

i count 9 total in the theatrical versions.
episode IV: (1) aunt beru. (2-3) the twin assasins at the mos eisley cantina. (4)princess leia.

episode V: (5) ion control operator, (6) random female pedistrian on cloud city.

episode VI: (7) twilek slave girl, (8) obese slave woman, (9) another random member of jabba's court (10) mon mothma.

am i missing any?

 

You're missing quite a few, apart from the fact you haven't included most female aliens. Not that most people would know they are female anyway.

There were human female aides with Mon Mothma. The singers at Jabba's palace, though, most of them were in the SE. There was that lady in the streets of Tatooine when the Stormtroopers almost knocked over her kid on the way to the Falcon.

In short there is a lot more than 9

 

alot more then 9? you mentioned one i can remember (the begger woman). and although i don't remember female aides for mon mothma, i'm willing to give you the benefit of the doubt on that...so that makes 12 tops? that's not alot more.
and what female aliens are there? i know from 'tales from mos eisley cantina' that the worm alien seen with the shistavean wolf man is supposed to be female. and maybe that drunken mouse critter kabe...but those are both highly conjectural and use the EU for evidence. now there are probably a couple female ewoks or jawas, but how can you tell?

 

edit: I was wrong, Kabe is female.

I'm sure the OS will have info on your question.
Also, the Twi'lek slave girl is named Oola just so you know.