She's got to keep her head clear. Timea can be a tricky opponent. I've seen them play a couple of years back at the Ordina Open and I remember Lena having a very difficult first set. She won it with a tie-break after which Timea's kinda gave up.
Both players have evolved since, and I'm inclined to give Lena the edge on hard court, but it is also the same surface Timea won her first (and thus far only) title...
Still, I'm quite confident Lena will deal with her rather easy (and decrease the chance of her entering Linz even more... )