Getting a rav and/or rebbetzin to help is good. You’ll have an adult and authority in your corner.
I don’t know but there must be a shadchan or shadchanit who has handled this type of situation before and can help you assert yourself in the process.
Maybe you can be honest with her. Tell her what you want. Ultimately it’s your decision and your life.
Many parents want something different for their children. Another person’s parents might want them to marry now and not wait and hopefully that person is telling the shadchan how he/she really feels.
Some parents want a learning boy for their daughter and their daughter doesn’t want that.
You’re not the first or only girl in this situation where your parents want something else for you.
Remember that… The shadchan or shadchanit works for you. Imho you want someone who you can be honest and open with, and someone that you trust to help you navigate this.
I’m totally inexperienced when it comes to shadchanim though. And this is me telling you my perspective based on life and having someone help you find your beshert.