HI Rachael,
Your lo sounds so much like mine! She also does better when i tweak the A time a little shorter than the norm as I first tried. All bubs are different and you just have to find the right balance and seems as though you have.. Sorry I don't know how old your lo is, obvsiously older than 9 months! - but don't be too concerned about the night time sleep being a little less. The times are guidelines only and if she is waking up happy from nt sleep and nap then, I think that's ok.
Once this routine is a little more established, you could try adding an extra 5 mins at a time onto the second A time to start pushing it forward (same with the first one), which will make her bed time a little later for you.
Glad you are finding some Y time. It's great having longer than 45mins to do something!
Of course, just when we have it all sorted they change!!!