Contact a lawyer to specializes in elderly or people with memory issues and ask them what their thoughts are.As for why the property was sold, that is a decision up to your mom and whoever she gave power of attorney to. 

Raise the expenses, rents go up. 

Seems perhaps a little low -only say this because my 4bed in Arvada CO is about $290/mo and with the Boulder/Louisville fires a few years ago a lot of insurance has gone up like crazy in the front range. 

Did you end up using them?

I was looking to have it convert to a long-term mortgage and eventually cash out refinance to build a second duplex once enough equity built up 

My question is do I have to pay the title company who has done all the work up to this point?

Can you get them up anymore and use the other offer as a negotiating point?

When taxes increase, when insurance goes up, when other things happen, how do you cover those?

I finished school when I was 16 and now, I'm 17 years old and I'm making 36,000 a year from my w2 job, I know there's not much I could do as of right now but what should I do to set me up so when I turn 18 I can start my investing Journey.

As a sellers agent, you do have significant work to do by putting up the property and doing open houses and talking with buyers agents giving them information.