You should point her to the statement made last week by the Prime Minister. Apparently the reduction in infection numbers has nothing to do with the vaccination programme but is instead due to a successful lockdown:
https://news.sky.com/story/covid-19-lockdown-is-main-reason-for-drop-in-coronavirus-cases-and-deaths-not-vaccinations-says-boris-johnson-12274266
"Boris Johnson has warned that the reduction in coronavirus infections, hospitalisations and deaths "has not been achieved" by the rollout of COVID vaccines.
The prime minister, speaking the day after the latest easing of lockdown restrictions, instead said it was the national shutdown that had been "overwhelmingly important" in driving down COVID rates."
So, reading between the lines, the only way to prevent another lockdown is, er... to continue with the current one. And this is from a man who told us, just a few months ago, that vaccination was our path to freedom.
You must make your own decisions based on your particular circumstances, Barry (as we all should if only we were allowed to). Personally, provided I have been vaccinated and those I meet have been likewise I shall be meeting up with people as normal. That is, without masks, without social distancing and without any other restrictions.