She doesn't benefit from people believing Assange is a paedo, which I don't think any mainstream media source has bothered reporting as potentially true. She benefits much more from nobody talking about him at all, and focusing on all the nasty stuff coming out from basically everywhere except Wikileaks about the man she's running against (but apparently not comparable dirt on Pence; wouldn't she focus more effort on framing her opponent's running mate than some foreign journalist who's already got the not insignificant matter of a Swedish prosecutor wanting to charge him with rape hanging over him?)

Just because a few Clinton supporters on Twitter who really don't like Assange think the allegation is worth crowing about and the Daily Kos has no journalistic standards and will print anything if it's a scoop doesn't mean Clinton is anything but a little worse off if this news cycle is about Assange.