Changing jobs while on H-1B in the US is illegal. She should have been deported.

And why are TEMPORARY GUEST workers buying houses in the US?

https://news.bloomberglaw.com/daily-labor-report/inability-to-work-doesnt-justify-court-order-on-h-1b-denial?fbclid=IwAR3g67RvbBQvAsnXuaFdvhJgsn-b9vnd7Dtiq1mnZ0jCbl1Wg3VYf-Yfbl8