Welcome to the site mrsnotso!
Perhaps your sponsor cares enough about you -- to be honest. Honesty, is often more comfortable than dishonesty. She is willing to experience the discomfort in regards for your highest good.
While there might be a number of reasons that she believes that someone else might be able to better help you -- the reasons are not important. So, if I were you, I wouldn't take it so personal.
The sponsor may have a different style or idea of "how it has worked for her and the others that she has been able to help" -- than the ideas that you're picking up at the other meetings.
When I was new in sobriety -- I went to a lot of different meetings -- thinking that "more is always better!" (Kind of like my drinking!)
However, many of the ideas that I was picking up at some of the meetings -- were actually killing me -- sober. I tried doing it like some of the people said to do it in the various meetings that I went to -- and I ended up drunk again, and couldn't get sober.
I tried coming back to AA, over and over and over and over again... but was unable to achieve or maintain sobriety. And, I figured "well, it works for them, but it will never work for me!"
When I did get another chance at sobriety -- I discovered that everything I had learned about AA -- in my first attempt at sobriety -- needed to be discarded absolutely -- because it didn't work.
My sponsor at the time was a really patient loving guy who just let me run -- because he couldn't make "a connection" with me. And, he hoped, that someday I would hit my bottom -- in sobriety -- and change my mind about what I was doing.
While I credit my first sponsor with saving my life, and I love him dearly, as I look back on our experience -- I needed a guy for a sponsor that was not so loving and kind and patient with me. I needed tough love -- not the touchy, feely, "I feel your pain and sympathize with you" kind of love.
However, I stuck with my first sponsor and he stuck with me -- all the way up to Step Seven. At Step Seven, he told me that I needed the help of someone else -- that had a better understanding of how to deal with the wreckage of my past, and how to make my amends. He had never experienced or had to walk through the kinds of problems that I had. So, he was doing me a favor -- he was loving me -- by letting me know that he had limitations, and that I needed to find someone different.
I don't know if any of that is relevant or similar to your situation. I'm simply sharing what it was like for me -- just in case you can get anything out of it, that might be useful to you. It may not be helpful to you and only helpful for me -- to share it with you.
Best regards. Best wishes. And, please keep coming back! Someday, you'll be glad you did.