The Telegraph did a short telephone interview with Summer where she talks about her first convention, how she started her acting career and about the casting for TSCC.

I didn’t know what to expect at all,” she says on the line from Los Angeles. “You never know what people are going to ask you to sign or what costumes they will turn up in.
[...]
When you’re first starting out as an actress you audition for everything and you never know what’s going to hit,” she says. “And my first job was with Joss Whedon.
[...]
I did not want to go to the audition and my mum got really upset and yelled at me and said, ‘Get your rear end in the car! You’re an actress, go and audition.

You can find the the whole interview at the dailytelegraph.