I love love love pee pads.
I guess if she peed other than the pee pad I would not like it but their bladders are so small and to hold it for four hrs ( the longest I am gone ever) would be just too hard on her and now that she is older I am so glad she is pee pad trained since she pee's even more. You know I feel it is important for walks every day rain shine or snow but cold mornings and late night I am so glad we have our good ol pee pads to fall back on when needed

Vets are great with medical questions but not so sure all are about nutrition or training