So Silver has a uti

and my heart is breaking for her! But the vet said to give her some chicken noodle soup but I was wondering is it ok to give her chicken bouillon cubes? Like heated up with water to make broth. Because I don't have chicken noodle on hand and I can go get some but I kinda want to be lazy considering I was up watching her most of the night. Also sorry if this is the wrong section!