Hormonal bunnies

Question
I have two pure bred mini lop females who came home from the breeder together, exact same age but not littermates. They have been totally bonded and loving to each other from the day I brought them home. Tansy who is the smaller of the two has seemed to be the dominant one mounting Poppy occasionally. They both started acting hormonally from about 6 and a half months, digging madly in the litter tray etc. When they were 7 months old (last week) Poppy started pulling hair from Tansy and built a nest (obviously a false pregnancy) I separated them for Tansy's safety as Poppy is quite a bit bigger. She then started pulling out her own fur and using hay to finish off the nest. After a couple of days she apparently realised she wasn't pregnant and started using the nest as a litterbox again so I let them back together again. Poppy is constantly mounting Tansy, bothering her a lot so I have separated them again. They are beside each other and can see each other and seem to want to be together but when they are it's a disaster! They are due to be spayed next week and I am hoping the behaviour will improve after that but I am concerned that they will lose their bond. Do you think they can go back to normal after they are spayed?

Answer
Dear Karen,

You're wise to keep them physically separated but able to see/smell/touch each other until they're spayed.  I hope they are going together to get the surgeries, because that's the best way.  They'll be recovering together, stressed together, and traveling together, all of which will help restore their bond.

If you're concerned that there will still be mounting behavior after the surgery (there might), keep them in the same adjacent pens for 3-4 days until they're feeling better, and then do careful re-introductions in a neutral territory.  Things should be fine if they have not been fighting or showing real antagonism towards each other.

Hoping all goes well with their spays, and they'll be back to normal soon.

Dana