How do I protect myself in this situation, while also helping a relative? 

I've been in your situation and nothing can prepare you for losing a parent.

Does that operational aspect have to devour all cash-flow, no not necessarily but it could, all depending on situation specifics right. 

My options are very limitted and the situation is very draining even I follow the bigger pocket advises and I unvested a lot of time in learning and also have years of experience with tenant.

But, that is not always the right answer and you should speak with someone familiar with your personal situation to get advice specific to you.

However, I don't want to be in a situation where I can't refinance at all.   

@Adedayo Adetunji understand your frustration with the situation!

I've heard horror stories that it's usually impossible due to the "burden placed on the municipality" but could really never understand what that burden was... most people living in those units wouldn't be using the school systems so aside from maybe an increased volume in emergency medical situations I can not understand that statement? 

Hi Daniel,Refinancing out of a high-interest bridge loan can be challenging, but you have a few potential options based on your equity, tenant situation, and FICO score. 

I don't believe you would properly replace the debt in this situation.