I’m assuming this loan isn’t for the purchase or construction of their principle dwelling. If this is correct, you’re right; the non-borrower spouse who has ownership in the property to be taken as collateral will have to sign the security instrument and will, along with the borrower, have the right of rescind if the collateral is their principle dwelling. However, if she has not applied for the loan she will not receive, nor need to sign, the early disclosures.