Have you experienced this situation first hand where an older person (parent/relative) relies on a younger person to translate nearly everything for them? This can occur even if they've lived in another country for decades.
What are the characteristics of the older person? E.g. little education, manual/low paying work, came to new country after their teens?
What are the implications - they also pretty much rely on the translator to make decisions as well?
How does the translator get on with their life after marriage/children, etc.?
What are the long term implications for the older person - any neurological diseases vs average because they have less cognitive reserve (in addition to natural endowment, that is, compounded by reliance), etc.?
Are you looking for ideas to help complete a uni assignment ? :-D