Hello @Herb McClane, welcome to the site!

Basically, effectively lowering my personal taxable income from the deductions, as well as her being able to get a tax break on her income from a rental deduction in our state.

My wife has an issue with her being over all the time since it looks like she lives upstairs. 

If you can afford the loss, if the 9.9% does not pan out or your money vaporizes into a ponzi scheme or some other scam, then it's alright.

I use the same mask when Iam forced to work with stuff that has nasty fumes in enclosed spaces, but switch out the round pink particulate filters for organic vapor cartridges.It's a bit Breaking Baddish, but it gets the job done.

The crawl also appears to be quite moist, since there weren't any vapor barriers set up to prevent moisture from building up.I am worried that over time the soil could shift, causing the supports to give way.

As such, consider this an urgent matter and consider getting an attorney if tenant is difficult or you forsee him/her being difficult.I am nto ana ttorney and this is not legal advice.

They are aware of the routine  and repeated use and turnover of these unit/dwellings and are reluctant to allow most "damages" alleged by landlords.IMPORTANT Even if she were to prevail on her BS carpet claim for $230, you'll hang her with your attorney's fees and costs since you won the majority of the contested amount of your security deposit.

Should I ask her uncle if he is okay with her being removed from the lease one month early, or should I just inform her that she is required to stay on the lease for the remaining month until the lease ends?

It's cheap, will take up very minor irregularities, is a good vapor barrier, and comes with preprinted straight lines that can help you keep your flooring oriented.