I'm sorry you are experiencing such difficulties. I only know the basics of your situation..but personally, I think it is using the box or pads. Lola is confused and now reverting to peeing in places she didn't before. I've always felt, when it comes to housebreaking..you have to keep it simple. Outside..train once and not train on pads and then again outside.
When a puppy comes..the older dog will often start acting up..exactly like an older sibling. Lola sees the puppy peeing "in the house"..why not her? I'm thinking..you now have to housebreak 2 pups...totally outside..no pads or box.
Just my opinion..