While Phoebe did not find her father, she found a brother and they bonded because of their similarities.
Phoebe accepts this and eats Joey's share of meat.
Phoebe discovers Frank on one of her attempts to find her father , who walked out on her and her twin sister when they were children, and later also walked out on Frank Jr.
Phoebe discusses this with her and decides to be Frank and Alice's surrogate.
The pregnancy marks Phoebe's life in several ways.
The pleasant surprise gets even better for Frank and Alice when they learn that Phoebe's pregnant with triplets.