ok, then every 20 mins put her on the puppy pad & praise her every time she goes, whether its runny or not. If she just squats & tries to go, but nothing comes out, praise her for that. & say simething along the lines of tink pee peed YAY!

Cause then later on, all you have to do is say, tink do you have to pee pee? & she should run to the door. Thats how we trained our big guy.

Also alot of people litter train their small dogs, so the dog doesn't have to go out in the heat or in the freezing cold.

Since she seems sensitive, litter training might be best. You should use sentless litter & a little box with a lid, cause alot of small dogs will play in the clean litter (which shouldn't be encouraged).

Hope this helps