You can use Flexible, in this case the person.name could be a long name (Labels and BlankSpace are custom classes that return widgets) :
new Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: <Widget>[
new Row(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
children: <Widget>[
new Flexible(
child: Labels.getTitle_2(person.name,
color: StyleColors.COLOR_BLACK)),
BlankSpace.column(3),
Labels.getTitle_1(person.likes())
]),
BlankSpace.row(3),
Labels.getTitle_2(person.shortDescription),
],
)