Helping my mom ease into AI

I'm thinking about helping my elderly mom get set up with Claude or ChatGPT. (Free ChatGPT allows more usage even after the limit has been reached. This could be a bonus for her.) 

She has suggested interest in it a couple months ago and has not mentioned it again since. AI can be so helpful if used well! I am at her home this week. If I set her up now, I can help her navigate it for the next days before I go home. 

I'm concerned she might use AI to medically self-diagnose or lose skepticism and take answers as facts. Claude has a "personal preferences" area where I could write some instructions on how to engage. With Chat you can enter that into a thread but I've noticed it can forget instructions from other threads. 

She doesn't work so won't use AI for projects. She'll likely use it to ask about health concerns, which supplements to buy, getting help with emails or letters, help with doing things around the house (like how to clean her air purifier, or create recipes). She might ask questions about politics. 

Can any of you with AI expertise give me suggestions?

1. Go wtih Claude or ChatGPT? 
2. Any instructions I can enter as preferences so she is less likely to act on misinformation? There's the thing about limiting the compliments too. 
3. Any other suggestions I am not considering? 

I'm grateful for any help you can offer!