I continue making the underlying mortgage payment myself (autopay) and get reimbursed from the borrowers payment.

I just started using PriceLabs (still on a free trial, will see if I continue using it).  

As long as the husband continues to pay rent for a couple more months, I will let the ex off the lease. 

I'll continue you to read on the forums I've learned so much in the little time I have engaged in the forum.

Use this time to study at the university and continue to study real estate.

You hired them to evict the tenant, so they should continue representing you until the tenant is out.

Networking plays a crucial role in this industry and remember to keep learning continuously.

I will continue to work on the things you mentioned 

At this point, instead of continuing to pay the interest loan payments on properties that we will never be able to financially finish since the rehab loans will not cover the actual cost of the rehab, I wanted to know the ramifications of returning the properties to the loan servicer, deed in lieu.

If you do decide to help them out and rent continues to be late simply have a talk wiht them and remind them that rent helps pay your bills and since you did them a solid ask for the same in return.