Texas is short on nurses and nursing assistants. She might be able to find a free, possibly paid (training wage), 4 week CNA course in exchange for working for the sponsoring health care organization for a period of time, probably a year, at full wages. She'd have to pay the course fee if she quits earlier though. You can search for info starting with places like
this.
If she couldn't handle that amount of physical labor, she probably wouldn't make it through basic training in the military.