Your story shows that success is not guaranteed but if you develop and commit to the right routines/processes, you can increase your chances of success.

For the first part of an LLC you will probably have to guarantee loans made to the LLC personally until it gets some history. 

Get obsessed, and be persistent read everything, listen to podcasts, audiobooks, go to meetups, network on BP, post on BP often, talk to everyone you run into about real estate.if you live and breath real estate, you will be successful: guaranteed.

There is moving guaranteed in real estate.

I have been very conservative with the information of my inheritance and have really only ever referred to it as a guaranteed comfy retirement that I can't touch not as money to play with.

If the funding is for the LLC, perhaps try to get the loan in the name of the LLC and then do a personal guarantee if need be.Secondly, the other questions you asked can be done in several ways. 

No way that’s going to work, I guarantee you if you put something together at those numbers you would be sorry.  

And then tell her; "If it is, your daughter needs to be the main applicant, and you and your husband can be a co-signer to guarantee rent payments".

There is a reason why corporate jobs are a guaranteed route to middle/upper-middle class.

I would only do business with folks who carry high limit E&O and who guarantee that their work can be relied upon for the purpose it was obtained.