If Caro won't play they are throwing away the match. Eva Dyrberg only plays doubles and the Grage girl is and only played 1 senior match before (Odense Q wildcard).
It's an irrelevant tie already. Belarus won the group and Denmark clinched a spot in next year's zone I. Caro plays in Pattaya next week and Memphis the week after. So why should Caro use valuable energy on a match that doesn't matter?