Sorry, Pat, I was not paying full attention. I applied for SS, which gives Medicaid. Don't know if Medicaid is provided except for SSI and SSDI. I was accepted immediately ( rare now, I think), and first SSI check came 3 months later. I believe I was enrolled in Medicaid sooner, though.
The sooner she begins, the better. If I remember rightly, one of the questions on either Medicaid or Foodstamps app. is "Do you have any outstanding medical bills?"