Letter of Rec from College Alumni

So I was considering asking my 10th grade history teacher for a letter of recommendation for Stanford. It was her first yea as a real teacher and I helped her a lot. I was also a student aide for her.

What I was wondering is, does the fact that she graduated from Stanford carry any significant weight? As in, if she mentions in her letter of rec that she is an alumni and thinks I would be a good fit?

No it won’t. Also, her rec letter will be used re-used for non-Stanford schools. What does that tell you? It’s about you, not the writer.