I recommend going into the trading post and searching for a female SV. See what the cheapest is and base it off of that.
Ex:
Lets say The cheapest for sale is 30 mush
Look to see if your pup has traits better than that one(better howler, lower gen, younger, ect)
If so, price her higher(maybe 50?) and advertise it that way.
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There is not set worth for a wolf, so it makes it hard to determine the price, especially since everyone thinks differently. If she's not selling, lower the price a little.
Sorry if this isn't very much help. This is how I determine prices
Fall Month: 2 
Night 
Clear Moon: 
