- SVB's downfall shows the Fed broke something in the economy, said Charles Schwab's Liz Ann Sonders.
- She pointed to the Fed's tightening, which has sent interest rates up 1700% over the last year.
- "I would be surprised if there weren't other things that break," she told CNBC on Friday.
The downfall of Silicon Valley Bank shows the Fed broke something in the economy – and other things could break with more rate hikes, according to Charles Schwab's chief investment strategist Liz Ann Sonders.