In connection with committing a long absenteeism

In connection with a long absenteeism, the accountant Strelkina was fired from Rodnik OJSC.
Appealing in court the fact of dismissal, Strelkina indicated that she was absent from work due to poor health due to pregnancy. At the same time, Strelkina did not contact a medical institution during this period.
At the hearing, a representative of Rodnik OJSC pointed out to the court that at the time of signing the order to dismiss Strelkina, the public was not aware of her pregnancy. In addition, the lack of medical reports about her poor health indicates a perfect disciplinary offense, and therefore the dismissal is lawful.
What decision should the court make?
On what grounds can an employment contract with a pregnant woman be terminated?