If she loses and does not run for office again, then what is she permitted by law to do with this money???
She can pay off any expenses connected with closing down her campaign, so long as none of the money goes to businesses owned by or salaries for family members. She can give it to the Democratic party without limitations. She can give money to other candidates or PACs within the limits; $2000 for candidates and $5000 for PACs. Or she can donate the money to a charity. She can't keep it.