It is when it's done so that an investor who already owns 20 houses in the county can buy it for cheap. Per court documents the buyer is
S.P. Lewis and a search of the county database under that name shows the foreclosure (search at link below for name "BATTISTI,ANTHONY" and select record for 118 Rosewood Dr") and you can find the property records associated with buyer via search term "S.P. Lewis".
http://www.beavercountypa.gov/tax-claim-search
Here's the pertinent information from the court documents. Certainly seems to me like the relevant authorities made no serious efforts to notify her before the sale or help her at any stage of the process. It seems relatively clear to me that there was either active collusion to help the property investor in the area who bought her house, or that they passively didn't interfere with the process allowing him to profit from it.