I NEED YOUR HELP

My Boss' daughter came to our office today, I asked "How old are you?"

She replied "I don't know, but I know that I am half my Mother's age

I asked "Ok how old is your Mother?"

She said she doesn't know but she knows her Dad is 5 years older than her Mother.

I asked "How old is your Dad?"

She said She doesn't know but she knows that if we add their ages ( My Boss, His Wife and Daughter) together, the answer is 100 years

Abeg Tell me the ages of My Boss, His Wife and the Daughter?????