Dr. Anukarna Singh
I don't think it's related to her neutering, infact hormonal aggression reduces after the surgery. I feel she needs to readjust because of change in place and environment. Give her some time, don't force her to interact instead interact with her using some interactive toys/ light/ catnip powder. Maybe she was not handled enough for the last few weeks/ she has gotten scared of some incident. Also if the behaviour continues get her checked, illness can show up with irritability sometimes.