Aside from the weird metaphor that makes it seem like Carol gave birth to Therese, the term "come out" is interesting here. "Come out of the closet" wasn't used until the 1960s (source). The way Carol uses it here, it's more like a debutante—a coming of age for Therese, not a "coming out" as a lesbian.

Here we see another old lesbian making a disparaging remark about a young person based purely on their age. Perhaps this is one reason why Therese doesn't go with Genevieve. She's tired of this attitude, so she returns to Carol, who has finally accepted her, despite the age difference.