What should I think of her actions?

[Lilith Cherry]

Maybe if you get your dogs spayed and neutered they will be much more happy, healthy and easy to take of? Just a thought...

[bckrazy]

Well... I've heard of females in heat adversely affecting other females. It could be jealousy, excitement, hormones, or a number of things!

How old is your "other female"? Dogs do not even reach social maturity until around 2 years old, and often, dog aggression becomes apparent at that age. I would defintiely keep them seperated when alone, and only together with close superivison.