Live in Italy or Spain?

Hi!

My niece is going to be an Au Pair next summer and she is hesitating between Italy and Spain. She is studying both languages at school, but is a little better in italian, because she had courses of italian during a year before starting learning it at school this year. She just started spanish. When is gets back here after the summer, she is gonna have these courses again and she doesn't know which one she wants to have better marks than the other, she would love to learn both, but I don't think it's possible unless she goes in Italy for a month and a half and then Spain for another month and a half. Also Spanish is a language that is more commonly used in the world, but we have Italian origins from my grandfather. She might go back again, as an Au Pair in the country where she isn't gonna go, the summer after, but then her 2 years in CEGEP will be done and it won't have an impact on her marks and she would really love to have good marks in both. My niece is the kind of student who is really good, but always want to be better and if she can have the higher marks, she is really happy. She is studying in languages. She is better in Italian because she has taken classes of Italian for 1 year before starting it at school this year.

If you were her, where would you go? Italy or Spain??
Thanks!
Also which regions of Italy and Spain do you think is better to live? less dangerous?

She is not a night owl, she doesn't go out at all so the night life in each country doesn't matter.
Additional Details
Yeah I think I will propose her to register with her agency to meet families in both countries and then find the perfect family for her. She is gonna ask both her Spanish and Italian teachers for recommandation letters in both languages so that she can meet people from both countries.

Thanks!