My mother, a pensioner, buys coffee for the people she meets up with... including a friend of hers, a millionaire with 34 investment properties, who always wait

My mother, a pensioner, buys coffee for the people she meets up with... including a friend of hers, a millionaire with 34 investment properties, who always waits to see if she will offer to buy before paying for one himself. Some people are just mongrels.