Hi RedRobin, yes, there was change!! 
Day 3 for us was crappy, day 4 marginally better and by the end of the week DD had pretty much got it.
Its now 3 weeks since we started and I'd say she's totally potty trained - I think we've had one accident in the last 10 or so days. I'm so so glad I stuck with it as, like you, I was desperate to avoid a battle of wills and seriously considered putting her back in nappies on day 4.
It all became so much better when I stopped asking DD to sit on the potty and just trusted her to do it herself. We had a few accidents that way but it was much less stressful for both of us.
It sounds like your DD has really got it, she just needs a bit of practice now that there are knickers in the equation! My DD was just the same but after a few days she was much much better.
I'd say stop asking her and trust her to do it herself to avoid any battles. You might have a couple of days of accidents but she'll get better.
I also found a chocolate button as an incentive worked miracles. DD got bored of stickers early on so I told her she could have a chocolate button for every wee (and two for every poo) that went entirely in the potty. So we'd both check her knickers after each wee in the potty and if they were totally dry she'd get a button. If they were damp I said 'oh dear, they're a little bit wet but you did so well getting most of it in the potty. I'm sure next time you'll get it ALL in and you can have a button.'
I felt mean not giving a button but I really stuck to my guns and it gave her a massive incentive to get all the wee in the potty.
Keep going! It sounds like you've both done really well so far.