Is it better if I get an attorney to apply for Social Security Disabiity?

You can apply online yourself at www.ssa.gov.  If the application is denied, you can apply for reconsideration yourself.  If that is denied, you can apply for redetermination yourself.  If that is denied, you can find an attorney using the website of the National Organization of Social Security Claimants' Representatives and appeal to an administrative law judge. Please keep in mind that Social Security Disability Income is based on work record while Supplemental Security Income is not.  Both are based not on a diagnosis but on a functional inability to work for at least 12 months.  If this is true of your daughter, document, document, document.  Be polite and persistent.