found this concept art where you could have saved maria along with the original ost chorus:

https://www.youtube.com/watch?v=Zs5n2JvNsVg&ab_channel=CGInstrumentals

'Do it, do it, do it, do it!
Can you take all of me?
slide onto my mystery
take it inside and hold on for dear life
you will remember me
Captured you and gave you BBC
I am all, you will take all of me'

sadly, sega chickened out of adding this secret ending.