If I were in the group, I'd urge that we meet at set times during the day for prayer and "Spiritual communion". If we had a Bible, we'd be golden! If not, I'd try to id the people who had the most extensive Bible knowledge and get them to give little presentations. I'd organize a daily Rosary. (The normal complement of fingers is all you need for a rosary)
Spiritual communion is an internal "act" involving an act of faith to Christ and a prayer that he come into our hearts and unite us with Him and, in Him, with one another.
No our religion would not fall apart. Not even close. Some of the weak might have a tough time, but that's always true.
I like oysters. Can't we give her the clams.