Adopting an older husky

Question
Hi there - we currently have a 18 month old female Siberian/malamute cross.  She is the light of our lives - and is the perfect dog.  She is loving, affectionate and active.
We are considering adopting an 8 year old (also female) Siberian/malamute mix.  We went to meet her, and she is wonderful.  She lives in a wonderful home - and has been moved a few times because of divorce.  The most recent family has her - but she is not getting along with their male 8 year old cocker spaniel.  There are dominance issues - and the husky has gone at the spaniel a couple of times.  The couple would love to keep her - but know they shouldn't - as after 5 months, the two still aren't getting along.  
Anyway - her demeanor is similar to our puppy.   She is still very active, up to date on her shots, loves attention, and has lived with another husky before - no problems.  
Will we encounter problems bringing her into our home?  Being another female - will our dog - who is younger and knows this as our territory be able to maintain dominance - or is she going to be pushed out by the older adopted female?
Any insight you could provide would be wonderful.  They played well together when they met, and everything was great - of course - that was on neutral ground....

Thanks for your help!!

Answer
Unfortunately, it's tough to say since every canine interaction is inherently unique.  Same sex pairings can lead to aggression issues, but not always.  If both are fixed and playful, sometimes fights rarely occur, or only happen in easily avoidable situations (don't feed together for example).  At the same time, Sibes are pack animals, and often love canine interaction and can be very adept at adjusting to new situations and new dogs.  I can't promise anything, but the younger dog will probably have less issue submitting to the older female.  Ideally, I would suggest a trial run, perhaps having the older female come over, meet in the yard and then come in the house for a play date evening.  That might give you a better idea of how they will interact at home.

Without being there to see it, I would by default say you've got about a 50/50 shot of things going well.  And since they've already met once and played well, I'd say you have probably a 25% chance that they would seriously not get along at home (the other 25% would be they might be rather indifferent toward each other).  Hope that helps, and if you arrange the "play date" on your home turf let me know how that goes.