I am the very proud owner of a beautiful 3 yr old bullmastiff bitch and her fantastic 8 month daughter  that i kept of the the litter to love,show and live as one big happy family but....... it's not so happy i am currentley having to keep my girls apart as there is increasing tension and fights.whilst i am aware that two bitches together is not always ideal i am trying very hard to remedy this problem as i love my dogs i have tried everything i can to avoid conflict between them but i am now considering finding sombody else to love my puppy as i am out of ideas so i would be eternally gratefull for any advice on how to create harmony in our home or am i wasting my time

Hello

I think that is would be best if you found a loving home for your 8 month old girl, fights beween two bitches can get extremely out of hand very quickly, bitches will fight to the death, and to be totaly honest theres no remedy or quick fix for these kind of problems. And Bullmastiffs grow very quickly imagine when your 8 month old is fully grown, with all that wieght behind her, you will find great difficulty getting them apart.
I know this isnt what you probably wanted to hear. But good luck with them both.
Nikki.

Very true Nikki B
Bullmastiffs will fight to the death, you should never keep another female unless you have kennels to put them in as they will not live together
You will need to keep them apart now for the rest of there lives.  you  need to buy two kennels and
have one in one day then the other that would be the only way it would work
I do rescue for them and we have so many in and that is the third biggest problem for getting rid of one...