First, I would try to credit her publicly with the ideas that were hers. Sometimes, by being generous with credit, it spurs the other person to "return the favor."

If that doesn't solve it, I'd try to work out an arrangement where we each agreed to present the ideas that were our own to our bosses. If that doesn't work, I would openly discuss the situation with her.

However, if the person taking credit for my ideas was my boss, I would tread cautiously. To some extent, I believe that my job is to make my superiors shine. If I were being rewarded for my ideas with raises and promotions, I would be happy.