Hi there! i recently brought a second bunny home (neutered male) to bond with my spayed female, the resident bunny. I have been trying to go as slow as possible to ensure a successful bond. The new bunny is being housed in our spare bedroom, and the resident female is free roam in almost our entire apartment. I started by swapping out toys, blankets, food bowls etc for a couple days. Today, we did a full room swap (the resident female is now in the spare room). I noticed that when she smells him, for example when she entered the spare room (he was already gone obviously) she started thumping like crazy. Is this a bad sign? Or could she just be unsure if he was in the room or not and was nervous (my thought)?