What can I do?

A friend of mine has serious anxiety and uses drawing and painting about happy things to deal with it and today a nasty boy took her book and drenched it in water. My friend then collapsed into tears and wouldn’t stop crying. I don’t have anxiety so I have no experience with it. Is there anything I can do to help her? Like help her draw some new ones or someting like that as I’m really worried about her.

^^^^^^^^

She would draw something like this. It’s not an exact copy as her book was ruined but her paintings would always be happy like this one.