Granny the Prayer Warrior

My Granny just called me to talk about my brother's salvation and where he will spend eternity. Now, the fact that she was on the phone after 7pm is a very rare occurrence; usually she is in bed by then.
Two weeks ago when she and my grandpa found out where Andrew was staying and what he was up to, they met with him "for lunch." At first I thought it was nice that they were being so loving and supportive of him. But after talking with her again, I discovered that they really wanted to make sure that his heart was right with God, that he was spiritually saved, that he knew where he was going when he died.
Now wait: Don't get me wrong. I have the same spiritual beliefs that my grandparents do, and I am glad that they are so open about their relationship with Jesus Christ. Also, I have been praying like crazy, especially during these last few months, that each of my siblings will come to realize how much they need God in their lives. But the way that Granny is going about this seems a little odd. She hasn't told anyone except me that she is meeting with my brother tomorrow. It's almost as if she's treating this "meeting" as her own personal secret mission. I'm afraid that she comes on too strong. I hope she understands that she alone is not responsible for whether or not Andrew has a change of heart. And I also hope she takes into consideration that he might not be very receptive at this point in his life.
She said she hopes that this meeting tomorrow will be an "enlightening" experience for both of them. I think that her heart is in the right place... Im just not convinced that she will come across in the best possible way (especially if she uses phrases like "blessed salvation" and "eternal damnation"!). I am praying that God gives her the right words to say, and that Andrew won't be dismissive or rude when he hears her message.