When you find yourself trying to remember a show (or any works) that's on the tip of your tongue but just out of reach, come here - the collective brain of the TVTropes community can probably help. Post all the details you can remember (examples help). If you're looking for a trope, head over to Trope Finder. Have general questions about tropes? Visit Ask The Tropers!
mla
Since: Sep, 2017
2017-12-24 11:29:13
https://en.wikipedia.org/wiki/W.I.T.C.H._(TV_series)
From looking at this page, Witch seems to match a lot of your description (elements, grandma, etc)

So what is that show where there are like fairy girls and they each control elements. Like theres a blonde that controls water. A black girl that controls fire. A read haired girl that controls wind. Like they turn into fairies and get wings and their outfits are blue. Also it shows a world that has trolls and stuff like that. One if the villains is an old woman that uses puppetry. It isnt winx club and the dude is friends with a small green troll. Like the red haired girl's gradma or mom owns a shop and shows them their powers.