Tenant's credit at 524
I listed my rental property on Zillow and received a completed application from a prospective tenant who's credit score is 524. Rent for the property is $1600 per month and per the credit report, tenant has a total debt of $611 and combined monthly income of $3,834 from her pension as a retired nurse. My issue is that the tenant stated she recently did a short sale for a home she's occupied for 35 years but other bills were getting her behind on her mortgage payments. Tenants has no bankruptcies and no criminal record. Need suggestions and recommendations .