I work for a woman who is paralyzed and need help finding some financial help to purchase her a Safe Step Tub?

The woman I work for is 54, so technically shes not a senior citizen, she has had multiple strokes which have left her paralyzed on one side, aside from that she also has had brain tumors, broken her hip and had pins surgically placed and has a colostomy. Part of my job is to give her a shower since she cannot get to the bathroom let alone wash herself on her own. She has a shower stool but she simply doesn't get completely clean, I looked into getting her a Safe Step Tub but her son is her only family that is actively in her life yet he is also disabled with almost as many issues. The idea of them being able to afford the tub on their own is far from the reality. We don't think M-Health will cover the costs, does anyone know of someone or some company that could help to pay for the tub? It would extremely improve the quality of her life in so many ways, not only would she surely be clean but would also improve her circulation and state of mind. Thank you to anyone with any information, I simply don't know where to turn for help.