There are fundraising pages set up and students from the high school are attempting to set up a benefit concert as well.
Six students from Marjory Stoneman Douglas High School - who lost 17 of their teachers and classmates during the February 14 attack - joined the "Sorry Not Sorry" singer on stage in San Diego for the first show of her Tell Me You Love Me World Tour.
United States ambassador to Mexico to resign amid strained relations
Many observers expected Trump would replace Jacobson at some point and bring in someone who more closely shares his views. Former Secretary of State John Kerry tweeted a message of thanks.
"A lot of Demi's music allows for healing, and it's how do you turn sadness or just a tragic situation into inspiration and empowerment", Bayer said. The audience had the opportunity to show support by texting donations to the CAST Foundation who will apply that money towards mental health resources for the students.
On Tuesday she told the CBS This Morning programme why she wanted to invite them along. And according to the source, even now, the songstress has a special place for the 38-year-old actor in her heart, adding that she hasn't ruled out giving their failed romance another go.
"Tonight was our first night of the tour and it was incredibly special", she said. "Seeing something that disturbing is just painful to watch and..."
Lovato has been open as she has battled with bipolar disorder, addiction and bulimia and is now taking her treatment programme on tour in the hope of helping her fans. It was such an honour to meet them and hear their courageous stories.