All perfect praise be to Allaah, The Lord of the Worlds. I testify that there is none worthy of worship except Allaah and that Muhammad is His slave and Messenger.
If this woman is trustworthy, then there is no harm in seeking her help in finding you a righteous wife. Ibn Saʻd wrote, "Nafeesah bint Munyah was the one who helped the Prophet marry Khadeejah bint Khuwaylid. The Prophet always acknowledged her favor..." [At-Tabaqaat AL-Kubra]
It should be noted that even if you trust this woman, she should be qualified to be consulted in this regard; the fact that you trust someone does not mean that he is qualified to be consulted on a certain matter. Al-Ghazaali wrote, "A person who is consulted regarding the manners of women must be honest and insightful of hidden and apparent matters in this regard."
For further benefit, please refer to fataawa 2742 and 85573.
If this woman fits this profile, then there is no harm for settling for her meeting with your prospective wife. You can also ask to see her photo. There is no doubt that it is better for you to see her face-to-face yourself if it is possible; this is more likely to foster harmony and affinity between you.
Lastly, we would like to remind you that this woman who is trying to help you find a good wife is a non-mahram (marriageable) woman; you are obliged to keep this in mind when you interact with her and should abide by the relevant sharee'ah rulings and avoid all that may lead to fitnah (temptation, tribulation).
Allaah knows best.