Sounds to me like her limits are those that somone learns as they are learning what is ok for poeple to do and what isn't people to do. This would be her values. To change something that someone believes as being wrong on a very personal level, rather than a preference requires realigning their value system.

For you to change how she sees the act, would require that you remove her beliefe that somehow it is either wrong or disgusting. Figure out how to do that, and you might be on your way. One thing for sure is it isn't going to happen quickly.

As far as coerce someone into something being legal or not. I would have to ask if it's ok for people to come to my door and ask me to join their church, then the same should be said of me asking someone to do something with me, they find repulsive.

V/R
ID