They’re all alive as the death toll of 107 in Kerrville has not changed:

‘Officials say that this number dropped due to people being found and because many who were missing originally have now been verified as safe.’

https://kerrcountylead.com/kerrville-officials-confirm-3-people-still-missing-from-july-4-flood/

edit: Forgot to mention I had the same thought and had to track down the answer, which is what I provided.