You married a JEWEL
My first observation would be you married a jewel.
If you've been married all this time and you are truely of like minds of this, you have it make in the shade.
I write this because the numbers are such that you'll be living off her salary and pension for the rest of your life. The typical SWR bandied about on this board generates 8k per year from your IRA, a bit more if you tap that after tax account. Certainly a very good thing for a true lobster couple where one love's to work and one want's to hang it up right now.
I'm not sure what the defensive statements where all about, kind of like you are trying to justify that she owes you in the reader's eyes. That should not be necessary. I would hope a Teacher could get out two years before the date you've come up with, but I imagine it varies between states. The math infers to me that if 52 gets her 80 percent than 50 should get something more than enough for a satisfactory FIRE.
Enjoy. My wife is FIRE now (3 years earlier than planned due to injury on the job) so I get to endure 3 more years of the work-a-day world. I don't "Love" my job, but I'm very good at it, and I can tolerate it while I get my ducks lined up for a comfortable ER. I like to think that since she's 100 percent retired, then "WE" are 50 percent ER.
8) 8) 8)
It's about the music