I fetched her competition results from various sources and probably these are the all of them.
She competed mostly in Switzerland, once in Germany and 2018 IFBB ACE is her first European competition.
Petra Osterwald
Insta****: @petra_osterwald
Born: 1982 - Height: 166,5cm - Country: Switzerland
2018 IFBB Arnold Classic Europe Amateur - Women's Physique over 163 cm - 7th
2017 SBFV Schweizermeisterschaft (Swiss Championship) - Women's Physique open - 1st
2017 SBFV Int. "Swiss Cup" - Women's Physique open - 1st
2016 DBFV Internationale Deutsche Meisterschaft (German Championship) - Frauen Physique - 11th
2016 SBFV Swiss Nationals Women's Physique open 2nd
2016 SBFV International Swiss Cup - Women's Physique open - 1st