Unfortunately, A&O never licensed any plush toys. My personal recommendation? Give her a 狼 PUPPET 由 Folkmanis, that way she can bring him to life AS Humphrey 更多 effectively than any other 狼 plushie. :)
sadly there was never any licensed merchandise made, although 你 could probably commission someone to make a custom plush that actually looks like the character model, and if 你 do, update me please