I think it's the real Gerbera BUT can also see where Diana is coming from re Dandelion.
Best and quickest way to find out for sure, Remove the plant from the pot gently, turn it upside down and look at the root, a Dandelion that size would have a longer TAP root, where as, the Daisy plants have loads of smaller spread out roots.
While the plant is ouit the pot, IF your happy it's a Gerbera, then gently remove some of the soil from the root area, refill the pot with fresh compost for seed growing as this will be more free draining. reset the plant back into the new soil and place in a light BUT NOT direct sunlight, allow the plant to settle down for a few days and then water the pot from below, let the pot sit in a saucer of water for an hour, the soil with change a darker colour when it has taken up enough water.
Set the pot aside to let ALL the water drain away then, set it back to where it was in the light position
dont let the plant sit in saucers of water other than for watering and only for a short time. Dont allow water to be sat on the foliage as this causes rot, (your brown dead leaves are too much water on the foliage hence watering from under the pot to prevent water drops on leaves.
After several weeks you should see NEW regrowth, give a half strength dose of indoor plant / Tomato plant feed, to give it a little boost, never over feed or you can burn the roots and do more harm than good.
Hope this helps you out a little and helps once you know IF the plant is a true Gerbera.
Good luck.
Kindest Regards. WeeNel.
