Fantastic!
IMO you have to design the techniques to suit your child - it matters not whether it's 'official' WI/WO, all that matters is it works. Well done you!
Just to sound a note of caution however - she's still only getting 11.5 hours sleep each day, whereas kids this age usually need 12.5. I know every child is different and needs different amounts of sleep, but my concern would be that if her routine is disrupted for any reason (teething, illness, missing a nap) then she will get OT again verrrry quickly. I'd still think about moving bedtime another half hour forwards.
That aside, I'm really pleased that things have improved so much for you. Good work!