:)

Eu diria assim.

My suggestion.

In EN you perform with confidence, with zest...which IMO is the closest thing to 'garra'.

Bolshoi in London 1999, Review Report, Margaret Willis
... temperament that a true ballerina must have, mature in understanding, ...Her many solos were performed with great confidence and zest and her ...
ananiashvili.com/guestviews/ guestreviews/bolshoi99LondonMW.htm - 8k

Welcome to the Harlow Ballet Website
... self-assured dancers, able to take their place on any stage in the world with confidence. ... where she becomes - for the moment at least - a ballerina. ...
www.harlowballet.co.uk/ - 40k - Apr 22, 2005

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Note added at 23 mins (2005-04-24 02:12:09 GMT)
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Royal Ballet Review from Ballet.co
... fearsomely detailed footwork, but it is approached with zest and commitment.... It’s a huge role for a ballerina: even though Ashton has provided some ...
www.ballet.co.uk/magazines/ yr_04/dec04/lh_rev_rb_1104.htm - 11k

... But whatever Valerie did, she threw herself into it with zest. ... the author
of two collections of poetry, The Bleeding Ballerina and Moody Bitch; two ...www.randomhouse.com.au/Rights/ Random%20House%20Australia%20Rights%20Guide.pdf

she showed great gusto during her performance

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Note added at 2 hrs 5 mins (2005-04-24 03:54:42 GMT)
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or \"she performed with great gusto\"

Abandon is an appropriate word for a dance move. As in the old French cabaret Apache dancing. Garra has so many meanings, but figuratively think about it this way: forte interesse, persistencia na execucao de qualquer ato; entusiasmo, vigor etc. I would almost say a quasi-reckless and aggressive energy, throwing oneself into something. For this, in English, I would use "abandon", the noun, as in wild exuberance