I think currently the rules give her a year without challenge (so I saw it reported anyway).
What it does mean is that Brady needs to consider changing those rules.
The real trouble is that it will do more damage and there isn't a clear 'best' option to promote unless Mordaunt is the focus. For the MPs to have Truss second last time, and the party members have her a clear winner is a problem that won't be resolved if there's a contest. In addition, what other cobbled together economic strategy will be allowed - how wide is Tufton St influence, is there anyone left to do the big 3 cabinet jobs after PM.