I have two of Irene Dobkin, one seedling and one blooming size and both have curly leaves;). Yours look fine for me, just I do not recommend to repot it. Also I think 12 degrees is a little bit cold for this plant.

Thank you everyone ,

It is near windowsill but its the place which takes the sun most and seems to enjoy her place.

I was wondering what are the characteristics of this hybrid,any genetic information ? I hope somebody knows can help me :)

Thank you