Hmmmm girls HELP!!!!

With my first baby I had no problem potty training him,But with my 2 year old now who is 3 This month,She is a nightmare to potty train.I tried the pull up nappies and she just didnt want to know.So I thought ok I will put her straight in Knickers and if she wets them,she will feel how uncomfortable it is and realise its wrong to wee in them,and with doing that I also asked her every 15 minutes if she wanted to go wee wee and poo in the potty and she sat on it,but did nothing.Next thing I know,She vanished and she was in the corner out the way doing a number 2 in her knickers.

So I then decided to take knickers off and let her run around in the nuddy,but then she wet the floor.Later that day when my hubby came home,I popped out and when I came back,I came back to a grim face and my husband saying she has wet the floor 3 times in 3 different places while you have been out.With that she wet again. I then shouted gezzz how much are you drinking. With that I put a nappy back on her as I had enough in one day. So I am back to square one of nappies.But I do still ask her if she needs the potty,but im still waiting for her to use it.Grrrrr shes late learning and its depressing me.

Anyone have any ideas or good advice on the best way to potty train a toddler?