Why does my girl think its "eww" to GET oral sex? She will go down on me without hesitation but won't let me do it. How can I help her get over it?

I answered this in a similar question before, but I found a website that explained it a little better than I could.

Women tend to grow up with misinformation about and discomfort with their vulvas. Negative messages such as, "It's dirty down there," create shame and disgust. As a result, when someone wants to give them pleasure, either by intimately touching or kissing, sucking, or licking, to some, it seems gross and disgusting. Some women worry that their vulvas are unattractive or unappealing, or that their own unique scent is "bad." . Some women believe that going down on a partner is against their religion. Others feel that having oral sex, especially with a male partner, alters the balance of power in their relationship. Given all this possible background noise, it is hard for some women to imagine either receiving or giving pleasure this way.

Taken from http://www.goaskalice.columbia.edu/0824.html

I know in America girls are brought up to not like their vulva/vagina, to hate it or never touch it, that its a bad place,ect, I am Russian, was never told my vagina was bad and russian men like all european men love vagina and enjoy giving oral sex,i didn't know America was so woman hating untill i went there, was so shocked because of all the things i hear that America is a great place, all full of equality and freedom, yet women are told so many lies, made to hate there bodies and only use there bodies to please men and never use there brain,Every american woman i talk to is completely idiotic,So many whores live in america, its just so shocking, after all the feminist things i heard about america, to see how completely backwards life is here, is... just very....disappointing.

When I met my wife over 12 years ago she'd NEVER had oral sex - either giving OR recieving ! We're talking about a woman nearly 50 years old coming out of a 25 year marriage ! ( I didn't believe her at first - but it became OBVIOUS it was TRUE ! ) I ( reluctantly ) told her I could probably live without RECIEVING oral sex ( I miss it - but I could live without it ! ) but if she wouldn't allow me to go down on HER we had a "problem" - one I could NOT live without ! As "S M J" said she'd been told it was "dirty" - that "good girls" don't HAVE oral sex - there was some negative "religious" influence - etc ! She reluctantly allowed me to go down on her the first time - was VERY "up tight" about it - couldn't relax - felt terrible "guilt" afterwards - etc ! Each subsequent time I went down on her she was able to get a little more relaxed ( I kept TELLING her to "relax and enjoy it" ! ) - suffered a little less guilt - and once she got OFF while I was going down on her all resistance disappeared ! Since she got to the point of ENJOYING it she decided to try going down on ME - discovered she liked that TOO - and even though I tell her I don't need her to give me oral sex EVERY time we have sex she tells me that SHE needs to go down on me every time - it really helps her get into the MOOD for sex ! Tell your girl her how much YOU want it - take it slow - and with any luck she'll at least start getting INTO it - hopefully start getting OFF on it ! The "eww" will disappear - she may even start asking YOU for it ! ( My wife ask ME to go down on her pretty frequently now - which I gladly OBLIGE ! )