Interrante says she wanted to breastfeed her son, but couldn't do it herself and couldn't pump at work. That's when Colletti stepped up to the plate.
"How did you make the decision to have Jessica nurse Mateo?" asked ABC's Rebecca Jarvis.
"I was at my wits end and when she offered, I was just nothing but thankful for it," said Interrante.
"Had you ever nursed another person's child at that point?" asked Jarvis.
"No, it was very natural, it seemed very natural," said Colletti.
Both women have since moved under the same roof and Colletti still breastfeeds Interrante's son.