Go to beach alone or no?

I love the beach. If I could live there I would. I have not been in 7 years now due to a bad car, and then my sister got an awful pain disorder that led her bed bound eventually. She always came to the beach with me. I want to try to go alone (even though the highway I take is one of the dangerous in the U.S.)..but now she has neuropathy and can barely even walk. 🙁 I just feel so guilty if I thought about going for the day without her. I would definitely tear up when finally going in the water. While I think of her in awful pain at home. She doesn't deserve this. She is such a wonderful person. I want to go..but the guilt and sadness is high. Any thoughts?