Many signs over the past 1-2 years have pointed to a Sleater-Kinney reunion happening soon (possibly this year), not to mention with the success of Portlandia/Wild Flag at the moment there has been great revival and growth in the S-K fanbase. So, she may be talking about Corin Tucker and Janet Weiss. Just speculation, but she definitely was choosing her words VERY carefully during this part of the interview.
There should be a TV channel that only shows footage of Carrie Brownstein and Chloë Sevigny making out. 24/7/365.