She voted for the party that a former Conservative Prime Minister described as the “nasty party” then.
To go back to the original point, there are always exceptions, for example, my mum was a Tory until she was a thirty and then she heard Harold McMillan telling she’d never had it so good and immediately became a Labour voter who became more left wing as she got older, but I’d say that, generally speaking, people become more right wing/selfish as they get older.