Jana is playing the $10K in Sibenik starting this weekend and got byes in QR1 and QR2. In QR3 she'll play one of two unranked players. She would then need yet another win, as it's four rounds of qualies.
Krejcikova is going to be very tough. If it took Jana three sets to beat unranked Leweurd and a third-set TB to beat unranked Susak, I don't see how she beats Krejcikova. But there's always the potential for a surprise. Good luck to Jana!