Hi EJ, sorry you're having a hard time still. It's not you, ok? Have you ruled out all likely suspects - teeth, illness, developmental leap, food sensitivities etc?
Also, before going ahead, have a think about what you want to do exactly - your goal - and what you're willing to do (so you don't get pushed into something you're not really happy about).
All the best

ETA - and for what it's worth, she sleeps a lot better than my DD So if you're a crap mother I'm a shocking one.
That was kinda what i was trying to say! (and when my DD was 12 months, i must have been a shocking mum too!- we had break throughs around 12 months, 15 months & 18 months)