My 14 year old niece is having surgery to lengthen her Achilles soon. When I go visit her in the hospital what is a good thing to bring/do? I want to make it special.

A couple of years ago she was in the hospital for some weird infection in her foot. When I went to visit her in the hospital I feel like nothing special....her best friend showed up shortly after me and my niece spent the whole time with him.

My sister and I don't talk, unless it has something to do with the kids. Since my sister told me about this surgery I feel like I should do something special. This type of thing is completely new to me and I don't know what to do.