I have to agree with the others here. You really made it sound like you wanted her to work for your donation -- asking her to explain why her charity is better than another. Then you indirectly imply that she needs help on her sales tactics, by asking if you could help her improve on them. Then to top it off you act condescending about the amount of money that was already donated.
All you had to do was click the link, donate the money. Or click the link, and decide to donate to your church instead. Instead, it sounds like you wanted some type of acknowledgement from her that you were doing her a favor, or willing to do her a favor. That isn't what charity is supposed to be about.
Do you still have feelings for her or something?