Problem is as yet the Ferns don't have enough depth to just go drop all the older heads, and replace them with kids.
The Nix ALW team is helping change that. See the emergence of Fraser, Clegg, Taylor, Foster, Barry, Wisnewski etc. And a 2nd NZ ALW team with AFC will accelerate that further
We are just guessing as to what the issue(s) with Klimkova are. Though does sound like it's another split within the squad situation. As it was with controversial Heraf - some of players actually supported him.
If it is older age 30+ players (Wilkinson, Stott, Ali Riley, Esson etc age group) who are mostly the dissenters, then you just get through this next 6 weeks. Post Olympics tell them is perhaps best they retire, because they are no longer part of the planning in the leadup to the 2028 WWC, as start focussing on younger players.
If the problem is also/more that 25-30 year age group (Bowen, Moore, Bott, Steinmetz, Cleverley, Hand) - then that is a big problem as this is your experienced quality core that takes you through to 2028. In this instance you'd have to look to exit out Klimkova.
I don't see the younger (sub age 25) brigade as being unhappy with Jitka, as she has given them all their debuts. She seems to promote youth. I maybe wrong, but I see them as mostly being happy with the Ferns coach.
And then if the unhappy players are spread all across the different age groups, again NZF need to replace the Czech. Signing her to a 6 year deal was very odd.
Edit - wonder if Bott is a dissenter. Was very odd a few windows back when she was dropped from the Ferns. Klimkova made it clear she was dropped, not 'rested'. She was one of the better players at the WWC, and is a regular starter in one of best women's football leagues in the world. But her form for the Ferns post WWC seems to have been disappointing.