archie is trained to go outside and on the pee pee pad ONLY if there is an emergency and I am not home or I'm sleeping.  The only advice I'd give is to consistently keep taking your dog out and when she goes outside, praise her a lot.  When she goes inside, don't do or say anything if you have not caught her in the act.  If you catch her in the act, say "NO!" and then take her out and praise her if she goes outside.  If you don't catch her in the act, then don't say anything.  Just get some Nature's Miracle and clean it up.  Nature's Miracle eliminates the odor completely for dogs so that she can never smell that same place and go there again.  Dogs usually go where they smell they've gone before or other dogs have gone before.  That's why they sniff around like crazy when they have to find a place to go to the bathroom.   
What I did to train archie was that I took him out all the time and praised him but if I caught him in the act inside, I said NO! and I put him on a wee wee pad because I live in an apartment so it's hard to just go outside right away.  If I didn't catch him in the act, I just cleaned it up and didn't say anything.  This sounds like what you're doing but perhaps by not using Nature's Miracle or something like that, you have not eliminated the scent so Sydney keeps going on the floor.   
I hate to break the news but the wee wee pad smell thing doesn't work.  I use wee wee pads and pads that I get from the hospital that they use on old people and Archie uses both.  I don't think that the pads from the hospital have anything that encourage people or dogs to pee on there!   
P.S.  I used to see Archie sniffing around like crazy when he had to go so I knew that he had to go outside...that's kinda the clue that I picked up on when he wasn't knocking on the door or anything to get outside.     |