Ugh, I feel your pain. I went through the exact same headache with my grandmother a while back. In my experience, Walmart intentionally makes it difficult because they want you to just pay for it yourself or deal with the account syncing issues, which honestly just creates more barriers for families trying to help out. Youre not crazy, the share button just isnt there. Over the years, I have tried every workaround imaginable, from screen sharing to just logging into her account directly. If you really dont want to waste time typing out a list, check out simple cart sharer. It basically lets you bypass the walled garden nonsense by creating a clean list you can send over. It saves you from having to play tech support while you are trying to finish your own work. Honestly, if shes really struggling with the app, just biting the bullet on Instacart might save your sanity long-term. I have done that a few times when I was in a rush, and the extra markup is basically a tax for not having to walk a relative through a checkout flow over the phone. Dont beat yourself up, their interface is definitely not designed for remote assistance.