
Time, and not letting her have such a large are when left.
for her anywhere away from her bed is being clean, and she has learnt to associate the garden with going due to your training. Now she has found she has an alternative when you aren't there!
Most pups do not have full bladder control until about five months anyway.
as regards asking to go out, two of mine don't ask, they just wait for the door to be opened, and if desperate just stand looking at me! so no answer to that one.
Some folk hang a bel or mobile low enough for the dog to nudge. to do this you would need to encourage her to touch it using treats, and then open the door! she will eventually gert the idea that when you hear that sound you will go and open the door!