Sue's Mom, if you haven't done so you should post this in the IL forum. I can't speak for IL but IN does not have dower rights for spouses, however if I'm not mistaken KY does so this would be state specific.
Compliance41704, dower rights, homestead rights, or whatever they may be called in your specific state generally only apply to spouses. I'm not saying they may not exist in some states but I have not seen where a non-spouse had these rights. Again it would be state specific.
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The opinions expressed are mine and they are not to be taken as legal advice.