Another  was making a contractor leave while he was trying to make a repair to name a few.Here we need to serve 10 day notice explaining lease violations. 

You need to know how to estimte repairs. 

She is actually okay for the past few years until she saw that I have totally rehabbed one unit when tenant moved out and I guess she feel jealous and have since demanded a lot of repair/upgrade and started making a lot of accuse saying mold issue causing health issues but at the mean time trash my yard and keep the common area dirty.

I am seeing some lend up to 80% for purchase, 90% LTC, and 100% financing for the repairs

Or would it be better to simply partner with them, they are friends of mine, with the repairs for a percentage of the profit?

While you have enough money to probably buy into and repair one foreclosure, your money would go farther by financing properties and putting as little as possible down.  

You send an e-mail with the list of repairs, and suddenly the contractor, or manager, or whatever, replies with questions.

@Nubia Silva seems like relatively cheap repairs so I would advise to not make an insurance claim if you intend to expand your rental portfolio.

The roof leaks and has to be repaired by the time the rain comes and there's no heating or AC units.The partner’s focus on finishing the project to perfection rather than timely completion has further delayed progress, and our financial situation has worsened as we struggle to pay the mortgage.Given these circumstances, we’re considering selling the property.

Since we do not want to make repairs and hold onto this house anymore.