Rhonda, depending on the state your daughter lives in, there should be either a state-run "PCIP" (aka: Pre-existing Condition Insurance Plan) or a federal-run PCIP available. I don't know enough about all the eligibility rules, but for better or for worse, I think that the federal PCIP may be geared toward people who have been denied coverage for 6 months or more, but I don't know how SSI is viewed in this light.
Here's the website where you can find the type of PCIP for your state: <a target=_blank class=ftalternatingbarlinklarge href="http://www.healthcare.gov/law/provisions/preexisting/index.html
">http://www.healthcare.gov/law/...reexisting/index.html
</a>
Good luck!