I didnt tell about timea cause I read that she s planning to play with tatiana garbin next year so
and yes you're right playing double has a part of fun but its also a big place to make improvement in your game, serve,returns and net skills.
It is important to chose a good partner with hom you ll be able to mix work and fun.
Timea is a good friend of alize but she's not the best double partner for her cause they have quite a "similar" game.
Perhaps she needs someone completely different from her style of play like Sabine or Nastya. Or a more experienced player like Benesova,Czink or Vinci.
I think she must be more commited in playing doubles cause it will help her to make her game evolve.She must make the best choice imo.