Impala help

[taurusracing12]

So I'm not sure if this is the right place to post this but my step mom just got a 2000 impala and it's leAking power steering and sounds like some type of whale when it's doing so. The pump was replaced a year ago and then again earlier this week but it's still leaking, although not as bad. The mechanic isn't sure what's wrong with it so i was wondering if anyone has any idea of whAt could be wrong.