Advisor asked for my entire slide presentation so she could give the presentation at an international conference First, she never helped me on either my thesis or my slide presentation.
After my presentation (which she did not attend), she asked me "how to present" it to her so she could use it in the international conference.
(I don't want to do that, but I have no choice.)

Then, she asked me to send the whole presentation.
I sent it to her as a PDF file.

Later, she asked me for the "power point presentation" with the script. 

I really don't want to give it to her. 

What should I do?

P.S. She never gives anybody credit. (She did this before with my senior.)

Update: After reading many comments, I realize that I might be over-reacting. In academic area, it is normal that advisor could use the entire presentation of their student in the conference. (If I am lucky, she will acknowledge me)

I feel so bad about it but I need to accept the reality....

Thank you for all comments.
As an advisor, I regularly use my students’ slides when I present my current projects. This is usually done within the context of high level presentations: I’m working on important project X; Alice and I worked on X.a which resulted in such and such, and with Bob on X.b which resulted in so and so. Claire and I are working with Alice to extend to X.c. If your advisor is supportive and showcases your work, she’s increasing its visibility and helping your career.

To conclude, presenting students’ work is not necessarily a bad thing and can help them a lot. 

What is more concerning is that you seem to have serious trust issues with your advisor. She may be passing off her students’ work as her own but I honestly think that this is either a misunderstanding or something else. Advisors normally want to show that their students are doing well, not that they’re being totally shepherded by the advisor. This reflects badly on the advisor which is why I think it’s unusual. 

If things have gotten to the point where you’re not harboring any goodwill to her, I suggest you rethink your options. If there’s a chance of a conversation to rebuild trust, try and have one.