How to make a child control allocate all the available space of it's parent (not page) without assigning a width value to parent?

[mabazud]

Question

I have a parent Container which I add child controls dynamically with different sizes,
I don't want my parent to allocate all the page's available space so I use tight=True
The parent Container adapt itself to largest child control as i wanted
But i want my child controls expand their parent's (not page) size
I don't want to assign a width value to my parent because I am adding dynamic child controls
which their sizes may vary

The code below is an example;
There is a large control added which determines the parent width
And there is a relatively small row containing 2 controls, i want one of them at left, and other at the right edge of parent
So i use the SPACE_BETWEEN alignment option
But it does'nt work probably because the row is not allocating the available width of the parent Container
And when I use expand=True option to the row, it all gets messy

Any ideas how can I achieve this

Code sample

import flet as ft


def main(page: ft.Page):

    # root
    page.vertical_alignment = ft.MainAxisAlignment.CENTER
    page.horizontal_alignment = ft.CrossAxisAlignment.CENTER

    # parent Control
    parent_container = ft.Container(border=ft.border.all(color=ft.colors.PRIMARY))
    parent_container.content = ft.Column(tight=True, horizontal_alignment=ft.CrossAxisAlignment.CENTER)

    # child Controls
    large_control = ft.Text(value='I am a large Title', style=ft.TextThemeStyle.HEADLINE_MEDIUM)
    small_control_1 = ft.Text(value='SC1')
    small_control_2 = ft.Text(value='SC2')
    row = ft.Row(controls=[small_control_1, small_control_2],
                 alignment=ft.MainAxisAlignment.SPACE_BETWEEN,
                 # expand=True (gets messy)
                 tight=True)

    # add child to parent's content
    parent_container.content.controls.append(large_control)
    parent_container.content.controls.append(row)

    # add parent to root
    page.add(parent_container)


app = ft.app(target=main, view=ft.WEB_BROWSER)

• I have searched for answers to my question both in the issues and in previous discussions.