Four humpbacks observed from our boat

We spent a few hours searching for humpbacks from the westside of Douglas Island to North Pass.  While searching on the westside of Douglas, we spotted a humpback breaching.  We moved a little closer and watched her breach three more times (I was never able to get a photo of the breach).  She also slapped her tail several times, and when she would surface she would make a low growling sound.  We also heard her trumpet blow.  It would be interesting to know if she was celebrating or annoyed by something.  I was able to identify her as #1879 (Sasha).  We have seen Sasha on several occasions. 
After watching Sasha we went down to North Pass where we saw three more whales.  I was unable to identify any of them.