It may be a bit harsh but if all else fails, tell her "I value your friendship and won't make any more excuses, but if you want a copy you will have to pay for it like I did. I respected the copyright, and expect you to as well. If you plan to get this as a freebe, please stop planning. I won't assist one friend to take from another." A mutual aquaintance can become a friend when they respect each others values. Otherwise she remains a mutual aquaintance.