I had to laugh, you said a 4 lb yorkie and 6 foot guy, you should see my son, he's 6'5" and probably about 280 and his new little guy weighs barely over 2 lbs..
Now for the other problem, confinement..! crate her or put her in an xpen, then take her out every 2 hours or so..you can always tell her hurry and go potty, they learn what that means, then when she goes, praise her and give her a treat(have them with you for as soon as she goes), then let her have play time in the house, then crate her again..consistency is what it's all about..I'm really pleased as my 13 week old one is already using the pee pads really well...good luck..