Understood... we don't quite know the period of infection, either, but I think we've been in close enough proximity to everyone to be able to tell if they aren't acting like themselves.

[ She dearly hopes they're going to be all right. Gojo, Mark, Suzuha... surely they'll be fine. But having faced the reality of the zombie in the basement and having to do an amputation on Suzuha herself, Haru isn't naive enough to simply think that it will work out for the best without being able to observe and be prepared for the opposite. ]