Rock Captain 99
Following the dreams!!
Then what was the whole point in Ash getting Rowlet in the first place, considering the fact that the whole reason it left it's family was to go with Ash, and considering the fact that if they really wanted Mallow to have Rowlet then they could have just had her bond with it and get it in episode 4 while Ash gets something else or they move one of his later captures up. At this point I really highly doubt that Rowlet would be traded to Mallow and before you mention the case of Aipom and Buizel keep in mind that when Ash caught Aipom he hadn't met Dawn yet, and also there was the case of Aipom being more interested in Contest then Gym Battles while Buizel was more interested in Gym Battles then contest so that's why that trade happen.
Where as when it come to Rowlet, it doesn't really get associated with Mallow that much nor does it really have a reason to go to her, I mean when you look at Rockruff before it Ash captured it the writers kept doing scenes and other things that were shoving Rockruff with Ash in are face to get us to associate Rockruff with Ash, and that's sort of happening with Poipole but I wouldn't say that it's to the same extent as Rockruff. So I really don't think that Rowlet is going to be traded to Mallow at any point.
Now considering that it seems like her brother might me showing up sometime soon I do think Mallow will get some more development soon.
Rowlet bonds with stenee!! Lol!