As the singer pledges her help to the three mass shooting sites, the Trump campaign still owes El Paso $569,000.
The suspected shooter had a "target list" that included religious institutions and political organizations related to both major political parties, officials said.
The pop singer attacked the president's response to the Gilroy, Dayton and El Paso shootings in a post to her almost 74 million Instagram followers.
At least 32 innocent people are dead. Two shooters were killed and one is in custody.