Honestly, it is super annoying but Amazon doesnt actually have a direct share button for your cart. I went through this exact same headache moving last year and its kind of a mess. You have to be careful though because some of the workarounds are glitchy and you might end up with double orders if you arent synced up. I have a couple questions to see what might work best for you:

• Are you guys planning on paying from one account or separate ones?
• Is it a ton of items or just a few big things for the apartment? I would suggest double checking the cart total often because prices on Amazon fluctuate like crazy. Make sure to verify shipping dates too, since different sellers can mess up your delivery timeline. Just a tip, Easy Cart Share is great if you're trying to collaborate on a gift list with someone else.

I think links just show empty carts tho. Be careful. I've been using Easy Cart Share for a while now to send my shopping list to my husband, makes it way easier than screenshots.

I tried to script a workaround for this last year because I was sick of the manual effort, but it was a total bust. Amazon ties the cart contents strictly to your session ID and encrypted cookies, so a simple URL link just wont work. Its super disappointing that their dev team hasnt prioritized a collaborative shopping feature.

• Lists are okay but they dont update in real-time for both people.
• Manual spreadsheets are a nightmare because Amazon prices fluctuate every few hours. Are you planning to buy everything on one account and Venmo later, or does she need to add specific items to her own checkout? Also, how many items are we talking about for the new place? I just use Easy Cart Share whenever I need to show someone what's in my cart without giving out my login info.