Who is Zdenka from The Glass Room and what is their importance?

Zdeanka was a ballerina until she fell off of a stage dancing and broke her ankle. After her career abruptly ends, she becomes a physiotherapist in the Glass Room. It is here that she meets and falls in love with Tomas. Zdenka is very gentle, fragile, and seems naive. She hope that Tomas will commit to her, but he will not. Zdenka meets Hana in the Glass Room and begins a relationship with her.