Well, I must admit I hadn't really thought of a woman as a "knight in shining armor", so I had to look up what that could me. This is what I found:

Bravery-Facing fears and challenges head-on
Loyalty-Standing by loved ones and commitments
Selflessness-Prioritizing others' needs over personal gain
Protectorate-Defending those who cannot defend themselves
Integrity-Upholding moral principles and honesty
Compassion- Showing kindness and understanding in difficult situations

https://inspirepearls.com/blogs/people/what-does-it-mean-when-someone-says-a-knight-in-shining-armor

Using this definition, I do know a woman who is my"knight in shining armour"

All my life, I have felt like I didn't belong, like I wasn't understood by anyone, and like there was no one else like me. That is, until my oldest granddaughter ( she is my adopted daughter) came into this world. She understood everything I was about because she is much the same.

She makes me feel loved, really loved, because of who I am.
When I am down in the depths of depression, she is there to lift me out.
When I don't think I can do something, she is there to remind me I can.
When I feel stupid or second-guess something I did, she understands and shows me all the ways I wasn't stupid.
When an innocent animal or person needs protection and help, she is there.
When one of her siblings,who struggle with stronger disabilities than she does, are being treated unfairly, she defends them in a calm manner, and makes others feel compassion for them.
She has high moral standards and is completely honest in everything she does...
This list could get so very long.

Most people call her my mini-me,and this is true. She is very much like I am, and because of that, I don't feel all alone in the world anymore. She is my best friend and I am hers. This has a sad side, too, though.I know how very lonely it is to walk in this world when no one understands you. Because of this, I worry deeply about how she will get along after my death. She does too. :-(

I guess this is why I keep trying so hard to get healthier and stay healthy. I know she will be able to function just fine without me, but there is a difference between being able to function in the world and being completely understood and accepted by someone. I am not sure if any of this makes sense. I am having a bit of an off day, but if I do have a female "knight in shining armour," it would be my granddaughter.

Yes.
Our back up production supervisor was the best thing that ever happened to that plant. She was absolutely AMAZING!!!
She was fair. She was stern. She knew the place inside & out & I admired her so much.

The doctor who saved my children's lives. I wasn't even her patient, she diagnosed me as we were both in the waiting room waiting to see another doctor. I thank God for her everyday.

Yes ! I will never forget when I was 6 and being bullied by a teenager from the nearby high school on my way home from Catholic school. He would get in my way, call me names…I was too scared to tell. He was probably 13 or 14, but to me he looked like an adult. But my mother was home sick one day and saw me out the window trying to get around him.

She got dressed, and when I got up the stairs she grabbed me, ran down and drove down the street after him. She parked, ran over to him and blocked his way. That’s when I saw that she was taller than him. I couldn’t hear all of it, but she was pointing to me and gesturing wildly, and at one point I was hearing the franglais she used when she was really mad. All he could say was, "I…I…I’m sorry…"

Then I heard her say, "When you see my little girl, you had better cross the street, mon ami. Or next time it will be her big black father looking for you !" He looked terrified. She ran back, jumped in the car, did a quick U-turn, and off we went. She bought me an ice cream before we got home. I never saw that boy again, after that.

I was so proud of her. 🥹

My daughter.

A friend