They have now stopped repling to our commications since I told them that they would not have the option of extending their lease at the end of the six month term [option to extend was contingent on 6 on time monthly payments].

I have built myself a BRRR calculator, and the numbers (in terms of cash-flow) are convincing.

I am an out of state investor that has a number of properties in the Evansville area and I am looking for a trustworthy long term PM relationship. 

If that is the case, then those are the terms your sister agreed to.

Where would be the best place to buy a condo that would be used for short term rentals such air bnb or vrbo??

I love this house and don’t want to lose it, I would like to add houses in the long term and build a portfolio. 

You may be using a short term loan that pays interest only so there would be no amortization period since the loan isn't payed down with each payment. 4.

Keeping it short here.

Mortgages in Canada come with different terms (eg 1 yr, 2 yr, 5 yr) and fixed and variable rate mortgages. 

Together, we negotiated favorable terms with the seller, ensuring a swift and beneficial transaction.