With an LLC, you may be able to deduct business expenses more effectively and avoid double taxation.

Can try to reposition to Class B, but neighborhood may impede these efforts.Vacancy Est: Historically 10%, but 15-20% should be used to also cover tenant nonpayment, eviction costs & damages.Tenant Pool: majority will have FICO scores of 560-620 (approaching 22% probability of default), many blemishes, but should have no evictions in last 2 years.

Now, if she had someone she implicitly trusts to manage it, as though she were present, that might work, but the added costs would probably make the endeavor non- profitable.  

My current solution of using Baselane is by far the most cost effective and easiest, but it still requires that I spend time bookkeeping.

I'll save you the details but...Per door cost: $63,300All in Cost: 700kTotal Revenue: 137k(ish) annuallyNOI: 65-73% (in the expenses we included: insurance, taxes, $75/month per door repair expense, management fee 8%, grass cutting, & a misc fund for random crap business license, etc.)Now...

Can try to reposition to Class B, but neighborhood may impede these efforts.Vacancy Est: Historically 10%, but 15-20% should be used to also cover tenant nonpayment, eviction costs & damages.Tenant Pool: majority will have FICO scores of 560-620 (approaching 22% probability of default), many blemishes, but should have no evictions in last 2 years.

Don't know how much renovations will really cost, again, either PM or GC conversations.  

If you think you will have it for less than 4 years I would say go with the HELOC because you have less origination costs.

If you were able to increase the value of the property significantly after the rehab, then you could bring the deal to a community bank  to refinance and take the hard money lender out.You keep all the equity and don’t have to file a partnership return for your annual tax return, which can be costly.  

Let's say at 6% over 30Yrs will be about $960 per month(Principle/Interest) with the remaining  interest only portion $40K costing roughly $200 per month. $1500- $960 + $200 IS $340Cash in your pocket after everything roughly $1500-$1160-$340 which is not bad for a 100% financed deal(INFINITE RETURNS)Now, If you ran this analysis on a 1% deal as @Nicholas L. mentioned you will undoubtably end up in the red each month.All the best!!!