Smoothest clients I know of are Amethyst and Primal. She could also try Olas, which is an Instagram-like client.
Discussion
Ah. I am familiar with Primal and Amethyst (use both), but had not heard of Olas. I will check Olas out today and even try it for myself. Thank you!
I recommend getting it from nostr:nprofile1qqs83nn04fezvsu89p8xg7axjwye2u67errat3dx2um725fs7qnrqlgzqtdq0