Mums, if you find an usual number of men's numbers in your helper's diary, is this something you would worry about? How would you investigate? Or would you just question her?

I will try to observe more and pay attention if she has any behavioral change e.g. chat on phone always, the places she goes during off day etc. Personally I won't be questioning her directly as she might get frustrated knowing that someone is reading her diary. It is better to wait until there are more concrete evidences that the maid is dating someone. If you are still worry, you can install camera in house to monitor closely.