Flutter 如何将行推到列的底部

我有一个专栏，需要显示一个新闻类别，新闻标题，并在底部应该添加作者的名字.

这是我现在所拥有的:

这就是我想要的:

我需要在底部推送作者信息，这是我的小工具:

import 'package:flutter/material.dart';

class NewsCardHorizontal extends StatelessWidget {
  final String title;
  final String image;
  final String category;

  const NewsCardHorizontal({
    super.key,
    required this.title,
    required this.category,
    required this.image,
  });

  @override
  Widget build(BuildContext context) {
    return Row(
      crossAxisAlignment: CrossAxisAlignment.start,
      children: [
        _image(image),
        const SizedBox(width: 8),
        Expanded(
          flex: 1,
          child: SizedBox(
            // width: 150, // Imposta una larghezza fissa
            child: Column(
              crossAxisAlignment: CrossAxisAlignment.start,
              mainAxisSize: MainAxisSize.min,
              children: [
                Expanded(
                  flex: 3,
                  child: Column(
                    children: [
                      Text(category),
                      const SizedBox(height: 8),
                      _newsTitle(title),
                    ],
                  ),
                ),
                Expanded(
                  flex: 1,
                  child: Row(
                    children: [
                      CircleAvatar(
                        child: Text('A'),
                        radius: 10,
                      ),
                      SizedBox(width: 5),
                      Text('Dolores'),
                    ],
                  ),
                ),
              ],
            ),
          ),
        ),
      ],
    );
  }

  Widget _newsTitle(String title) {
    return Flexible(
      fit: FlexFit.loose,
      child: Text(
        title,
        maxLines: 3,
        style: const TextStyle(
          fontWeight: FontWeight.w700,
          fontSize: 18,
        ),
      ),
    );
  }

  Widget _image(String image) {
    return SizedBox(
      width: 150,
      height: 150,
      child: ClipRRect(
        borderRadius: const BorderRadius.all(Radius.circular(20)),
        child: Image.network(
          image,
          fit: BoxFit.fitHeight,
        ),
      ),
    );
  }
}

我也曾try 删除Expanded，并在中间添加Spacer，但出现错误.我如何才能将最新的一行推入列的底部？