I would suggest using it personally at this time. You could even do a page for each of your granddaughters with verses that are important to you or character traits you would like to see in them or even scriptures that you pray for them. You could keep the pages in a book that you work on to give them in the future. It could become part of your last will and testament – a special keepsake for them when they are older. You could also have your pages out when they come for a visit and if they ask about them you can share briefly what you are doing. May God show you ways to build into the girls lives without harming your relationship with your daughter-in-law. May God bless your tender heart toward each of them.