Holy FUCK! I make myself crazy!
I finally beat the blue bitch, but then I didn't read the dialog completely and kept scrolling through the text hitting the "A" button, getting angrier and angrier.
I thought I was on a loop because right when I gave Mystique the coup de grāce, she gave me mine too. (I thought it was a glitch.)

But then it went to the cut scene with the text, which I didn't read too well, like I said, so when I couldn't exit out of it, I hit the restart button on the console and played the fight a couple more times, before I finally beat her again.
THEN, I was in the dialog scene
again hitting the "A" button, not going anywhere
again, when I moved the joystick at the right time and noticed the choices in the dialog box I could choose.
(It's been so long since I played an rpg, I forgot the process

)
Anyway, I got out, met Cyclops, beat The Blob, got Magma back to the school and am in the process of exploring
it.
Stewart is fucking great as Xavier like you said, C.
It cracks me up no end to watch him wheeling that chair around at Mach 6, and almost run over Alison trying to stay with her. It looks like he's tailgating.
Thanks for the help, Church, and thank you for any future help, too.
(I hope you don't regret agreeing, now that you see how I am.) 