It's the Holy Catholic Faith that needs defending, not a so-called "seer" and her messages.
Requesting the prayer of the Rosary, is not defending the Holy Catholic Faith?
Praying the Holy Rosary is a must for every Catholic. It doesn't take a seer for us to know that. Though absolutely necessary, defending the Faith involves more than prayer. It involves speaking out against the errors of Vatican II and all the horrors in its aftermath by those who should be our shepherds, and the willingness to shed our blood if necessary so that it not be degraded.
Exactly and one further point
theologically speaking the Rosary is not the sum totality of the Faith, if it were, what did our forebears in the Faith do until the time of St. Dominic i.e. before there was a Rosary ? (I pray mine everyday for the fulfilment of the requests at Fatima !)