I was given a Camellia 'Margaret Davies' as a present to remember my sister named Margaret. When the Camellia flowered it appears to have another strong pink flower on one of the main branches with the white/pink tinge flowers you would expect on the other two. Is it possible that a mistake has happened in the grafting process (if these shrubs are grafted)? I don't want the pink shrub to take over, and it looks to be more vigorous than the white. Should I actually remove the pink one at ground level? Any suggestions would be welcome.