IF the property has already passed through probate and gone to the heir(s) before creditors filed a lawsuit, then the property is beyond their reach: it is no longer the property of the person they are suing (or her estate) when the initial their legal action. However, if the creditors sued  either before the person died or after she died, but before the property was finally distributed to the heirs (e.g. while it was still part of her estate, pending distribution), then the creditors may be able to reach it: once a lawsuit is initiated, transferring the property may not protect it (since otherwise, a transfer could be used to defeat a legitimate lawsuit).