Everyone should take Creatine, tbh, especially people who don't eat meat. It's essential for cognitive function and it's also been proven to have positive effects on memory, so older people should be supplementing. It will take years for doctors to cop on to it. If you Google it you'll see all the research. It's the most researched supplement out there. As for protein, as long as she's not overdoing it, there'll be no harm done to her kidneys and again as she doesn't eat meat (or eggs) it can only be good for her.