A couple of things. First, I'd get her to a vet to check if thisnis a urinary tract infection. Thisnis a common cause of peeing on couches or carpets and repeat peeing in a short period of time. They can be painful as well and females are more prone so you'd want to have her checked right away.
Second - she is only a baby yet and just as a toddler would not remember from day to day what they are supposed to do, neither will such a young pup (and keep in mind that training is an ongoing task and also that a barrier ( eg management!) is a much better option for keeping a dog away from where you do not want her than training ever will be. Many dogs are only 'trained' when their owner is there - very very few will not be going upstairs or other places when you are not there to supervise!
). Also- a pup this young really should not have access to the full house, where she can go wander. Free rein too early is why so many dogs take ages and ages to get housetrained- as so many of us have learned after thinking we were 'done' with housetraining! :lol: - at this age she should really never be out of sight and always in arm's reach. If she has been allowed to wander the couch peeing may only be the first time you have noticed a habit that has gone on when you are not there as dogs quickly unlearn early housetraining skills if allowed to wander and pee at will. Most dogs are not really reliable till age 1 and won't be more than about 70% even at 6 months unless really watched, watched, watched and given very structured housetraining until that point.
If you haven't yet, please download Ian Dunbar's wonderful training and care book After You Get Your Puppy which he has offered for free as a PDF download from the download section of
www.dogstardaily.com - it will really be a great help as he goes thru all this step by step and also gives owners a realistic view of what they can expect (and what they need to do!
) to get that well behaved well trained adult dog they want.
Your pup is at a critical age to make sure she gets the right shaping right now, so this is really important structure and management to give at this point in her young life.