Not as you present it, but we'd need to know more to give a more thorough opinion.
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based on your post, I think the answer is no in most, if not all, states, but the rules do vary some, but id caution, that's based entirely on the minimal information your post provides
The rule is that a lawyer can not use what they learned from representing a client to that client's disadvantage. If she did not take your case then you were not her attorney. Because it was 2 years ago it is not likely any of the information she might have learned would have any value in the case. You would have to show that the information you told her made a difference in the case. It would be very unlikely that this was the only factor that decided the case and if there were other factors when a judge or appeal court looks at it they would likely say they could not tell that the information she learned made the difference.
Every situation is different and you should consult your own attorney to go over all the particular facts in your case. The answer given is only intended to provide general guidance regarding rights and responsibilities.