who was Maya's mother? Definitely, Maybe

"Definitely, Maybe" (IMDb 2008),

My question to you is: who was Maya's mother?

https://www.youtube.com/watch?v=0oK4VOUmOkc

Plot:

The story focuses more on the journey of self-discovery and romantic exploration of Will Hayes, as well as the bond between him and his daughter Maya.

The journey of self-discovery and romantic exploration of Will Hayes evolved in different places, with  Isla Fisher as "April,"  Rachel Weisz as "Summer or Natasha,"  Elizabeth Banks as "Emily or Sarah," and  Kevin Kline as Professor boyfriend "Daddy of Summer."

Set in New York City, the film is about a former political consultant who tries to help his daughter understand his impending divorce by telling her the story of his past romantic relationships and how he ended up marrying her mother. 

In the film "Definitely, Maybe," the character known as "Summer" is revealed to have a real name, which is Natasha - The character of both Summer and Natasha (Dual role) is portrayed by actress Rachel Weisz.

**

Cast starring: Ryan Reynolds (Canadian), Isla Fisher (Sweden), Rachel Weisz (American), Elizabeth Banks (Briton), Abigail Breslin, and Kevin Kline (American), Abigail Adams Breslin * (American) as "Maya."  

* 

Abigail Adams Breslin (American) was born in New York City.  

Breslin is named after Abigail Adams (Husband: John Adams), the first Second Lady and second First Lady of the United States.

She rose to prominence with the comedy-drama film Little Miss Sunshine (2006), for which she received a nomination for the Academy Award for Best Supporting Actress at age 10.^[2] Breslin went on to establish herself as a mainstream actress with roles in the films No Reservations (2007), Nim's Island (2008), Definitely, Maybe (2008), My Sister's Keeper (2009), Zombieland (2009), Rango (2011), The Call (2013), August: Osage County (2013), Maggie (2015), Freak Show (2017), Zombieland: Double Tap (2019), and Stillwater (2021). Between 2015 and 2016, she had a starring role in the horror-comedy series Scream Queens on Fox, her first regular role in a television series.

**

Rachel Weisz: What was her fame? 

***

Dual role or Dual roles: Which is correct Grammarly?

Both "dual role" and "dual roles" can be correct depending on the context.

"Dual role" refers to a single individual performing two different functions or portraying two distinct characters.

"Dual roles" would be used when referring to multiple individuals each performing two different functions or portraying two distinct characters.

For example:

"She played a dual role in the movie, portraying both the protagonist and the antagonist." (referring to one person)
"The twins played dual roles in the play, each portraying a different character in the first and second acts." (referring to multiple individuals)

So, the correct choice depends on whether you're referring to one individual or multiple individuals performing multiple functions or portraying multiple characters.