Believe University of New Mexico, University of Arizona, Arizona State and Alabama would likely give her enough merit aid to bring your costs down to $25k per year.
You say you are lower income…how low? Low enough to qualify for the simplified needs test?
New Mexico is likely the most affordable!
Re: residency….usually it’s not where you own a house…it’s where you actually reside. We have family members who live abroad and own homes in the U.S. but they actually LIVE abroad. They don’t have instate residency status anywhere. So…you need to check to see what Delaware’s rules are.