Hi Marcela-
I think the slow bowl eater is a great idea! Eating too fast is not good for your puppy. Sometimes puppies eat too fast because they got used to competing with their siblings for food. She may eventually slow it down. But, yes, keep using the special bowl. Especially, if she is enjoying it.
You definitely want to keep her on a puppy food and it sounds like she may be a large breed puppy (?) in which case you will want to make sure it is an appropriate large breed puppy food.
My dogs’ do great on Whole Earth Farms. It is Merrick’s budget brand. Their puppy formula is appropriate for large breeds. Also, NutriSource is a brand that many seem happy with on this site that you could look in to. Good luck! Please give a report on how she is doing.
