London (CNN) -- In the week between her death and her funeral, Britons are having an awkward time coming to terms with the legacy of Margaret Thatcher, a prime minister who last held office 23 years ago -- meaning no one under 40 could have voted for her, yet the mix of anger and admiration is spread across the generations. 

The emotional outpouring in this famously undemonstrative nation is matched in recent memory only by the death of Diana, Princess of Wales, when flowers piled up outside royal palaces and Elton John's mawkish "Candle in the Wind" surged to the top of the charts. But while Diana was mourned in unity by millions as the "people's princess," Thatcher's death is being marked in widely different and unpredictable ways. 

WATCH: Not everyone's mourning Thatcher's death 

It has become an overused adjective in the media that Thatcher was "divisive." Some countries might put aside political differences and unite to respect the passing of a leader -- especially the first and only female PM, who won three successive general elections. But in the UK debate about Thatcher is raging almost as fiercely as it did in the 1980s over issues like the privatization of industries, the Falklands War, tax and social policy, her close relationship with American President Ronald Reagan and combative stance against the European Union. 

To many she was the woman who broke the mold, showing the way for others, and the leader who made "Britain great again," according to PM David Cameron. Geri Halliwell, aka "Ginger Spice" from the 1990s girl band the Spice Girls, spoke for many when she tweeted this tribute: "Thinking of our 1st Lady of girl power, Margaret Thatcher, a grocer's daughter who taught me anything is possible...x." Halliwell later deleted the tweet in the face of online criticism, but went on to regret the move, describing herself as "weak" and cowardly. 
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Margaret Thatcher,
Margaret Thatcher,
prime minister
prime minister
23 years ago
23 years ago
Diana
Diana
Elton John
 Elton John
Candle in the Wind
Candle in the Wind
yes
surged to the top of the charts
no
But in the UK debate about Thatcher is raging almost as fiercely
she was the first and only female PM
the first and only female PM
ye
who won three successive general elections
three
three
she is Ginger Spice
Ginger Spice
the Spice Girls
the Spice Girls
1990s
1990s
they were grocer's
grocer's
twitter
tweeted
She deleted it
Halliwell later deleted the tweet
because of online criticism
 online criticism
she regretted it
t went on to regret the move
"weak" and cowardly
"weak" and cowardly