I think it depends on the type of team they put together. The Spanish League's level was VERY low last season. With all of the problems that the Azeri League may present I think it's a far better step in terms of development than if she were to spend another year in Spain.
Sure, staying in Spanish league would have been even worse for her, but she's only 18 years old and she should have gone to a league where the development of young players isn't subordinate to getting good results. France or Germany could have been good for her, it would have been a less big step also culture-wise. Anyway good luck to her, I hope everything will work out fine.