I would just let it soak in the sink, and make sure it's thoroughly dry so it doesn't get mold in the tight spots. Or if you can take the strips of fleece out to wash and let dry. I think
Tjones has toys like that she may be able to tell you the easiest way to clean them easier.
Personally I think male/female get a long great, I see very little spats between my pair and Simon was alone for 4 years before we introduced him to Leela.
He sort of took on the role of her long lost patient Uncle
every now and then she still wants to ride on his back and be the baby and he lets her lol. I really thought Leela would be the more dominant of the two, but once Simon settled in he took the dominant spot and she fell into her brat spot lol.
I was surprised but it was interesting to watch. Simon is the shyer of the two and didn't have a lot of confidence, over time it has been building up though.