It generally doesn't look like kidney deficiency. She was tired from crying, so I guess she was really tired. It is normal that she can't support herself because of her poor physical strength. There are two methods: first, massage. Let her lie on the bed, and you can massage her back freely, mainly on her shoulders, both sides of her spine and her waist and eyes. When you press her waist, she will feel very painful, so you can gently, from light to heavy, to ensure immediate results.

Second, exercise. You can go to the gym if you can, but you can't go to the playground. Exercise every day. When you love instead of exercising, your physical strength will be fine.

PS: Don't go to the hospital if you can. No matter Chinese medicine or western medicine, you have to take some medicine if you are not sick. You might as well recuperate yourself. Besides, this kind of thing, ML, was quite interesting at first. After a long time, it is more convenient to solve it on the computer. It is actually a good thing that your wife is weak.