Hi OLG,
Let her try different styles, like a french twist or so !
Or a different kind of bun.
I am not an expert but I know for sure that there is enough info to be found on the internet about that.
It can make her feel a lot better about her hair too, I am sure of it.
I think a bun or twist also can be exiting as it wonders oneself how long hair the lady in question has :-)
Good luck !