Very early on there was a full description of April's clothes she wore on the day of the abduction circulated in the media. There wasn't any mentioning of gloves, and her mother sure would have known if she was wearing them.
It would have been mentioned for sure, because a glove is very easy to lose and it would have been an important piece of info for the searchers, IMO...
maybe if mb had some gloves, and asked her to put them on... [just trying to make sense of the fact that no forensic evidence of aj could be found in the car].