In the end we decided to separate the girls. Make us so sad and won't be able to see them cuddling together again
Been several days we heard lots of loud squeaking and fighting squeaking. No blood or any scar thou. Mcnulty always be the dominant one since the beginning, but never actually bite or scratch Bubbles.
But recently Bubbles seem quite sad and grumpy and squeaking more, also sometimes making the clicking sound (which I heard hamster makes clicking sound when they really upset). They still sleep together or side by side (oddly)
Mcnulty like to annoy Bubbles a lot, go where Bubbles is or sleep next to her. But also Mcnulty so selfish and dominant, suddenly no reason just attack Bubbles (well more to squeeze and step on her). They been fighting but never be any blood. Today when they fought I use my hand to separate them and I got bitten a bit (not hurt).
So I hold them one hand each they bring them together and Bubbles just squeak. So I put Mcnulty in other cage, when I hold Bubbles close to the cage and when Mcnulty sniff her, Bubbles give a loud squeak and move backward even on my hand.
After that we think probably better to separate them and hope Bubbles will be happier.
I just hope we made a right decision by separating them, quite sad though.
After we separate them, they seem confused with the new setup. Is it possible to reintroduce them again one day and live together again?