I have gathered that a Co Ownership agreement is the simplest way to go.

@Chad Gibson I'd have to 100% agree with Mike; the simplest way to go is to simply draft a lease agreement, which is legal and binding and proves that they are paying you (income). 

The sImplest way would be to find a 1031 accommodator in your town.  

Assuming Texas participants (you and your "partner") and a Texas property:An LLC tends to be the simplest and easiest when it comes to care and feeding. 

The simplest way to get clarity on this is to have a great relationship with your primary home lender -- if you happen to have this then the best way to know would be to ask them candidly for advice.The most prudent move would be to push the second property's loan processing back just enough for the first property to close before the formal paperwork starts flowing on the second. 

I have the simplest finances on earth to keep up with compared to anyone who falls outside of that category.

Would certainly be the simplest, cleanest, and least risky avenue.

Decide if it’s your investment with the bonus of helping your daughter or an investment IN your daughter.If the later, simplest route is to have her take out the loan with you as a co-signer.

Simplest way to figure all of this out is to become an Agent, as an Agent you would have access to MLS data

Simplest path of course is to bank your cashflow and save for your next purchase organically.