Jennifer Crumbley, the mother of a teen who took the lives of four students in a 2021 Michigan high school shooting, testified in her own trial and said she would not have done anything differently before her son’s attack. CBS News' Lilia Luciano reports. Each weekday morning, "CBS Mornings" co-hosts Gayle King, Tony Dokoupil and Nate Burleson bring you the latest breaking news, smart conversation and in-depth feature reporting. "CBS Mornings" airs weekdays at 7 a.m. on CBS and stream it at 8 a.m. ET on the CBS News app. Subscribe to "CBS Mornings" on YouTube: https://youtube.com/CBSMornings Watch CBS News: https://cbsnews.com/live/ Download the CBS News app: https://cbsnews.com/mobile/ Follow "CBS Mornings" on Instagram: https://instagram.com/cbsmornings/ Like "CBS Mornings" on Facebook: https://facebook.com/CBSMornings Follow "CBS Mornings" on Twitter: https://twitter.com/CBSMornings Subscribe to our newsletter: https://cbsnews.com/newsletters/ Try Paramount+ free: https://paramountplus.com/?ftag=PPM-05-10aeh8h For video licensing inquiries, contact: [email protected]