I'm so sorry to hear about your boxer.
As for your new little cocker girl, generally cockers REALLY want to please their people. But changing homes can be stressful and confusing, and more often than not, you do have to review Potty Training 101 with them. She sounds capable, since she is able to hold it all night.
It kind of sounds to me like she's peeing right in front of you in the house so you'll know she's pee'd. She doesn't know Where to go, but she knows you wanted her to pee and she wants to please you.
So, as the others said, take her out on leash, to the same spot, give a potty command (I use "Go Potty!") NO other talking, and then HUGE praise when she goes. Just be really matter of fact, i.e. you Expect her to do it, no choices, no distractions.
I'd suggest ONLY potty training for a few days, until she really gets it. If she was trained before, this should come quickly. If she wasn't really trained or not crate trained, it will take longer. The key is consistency.
Be sure to clean the floor with an enzyme cleaner like Nature's Miracle, and her crate also, because it can hold odors that only a dog's nose will detect.
Good luck and let us know how she does. What's her name?