She's just a baby puppy and often baby puppies are "here to serve" and then suddenly they become interested in the rest of the world and unless you continue to work very hard, they are no longer the focused little people pleasers they once were. Some puppies can have better focus and bidability than others, depending on breeding and it sounds like you have done a good job on foundations. I would warn against too much too soon as that means you often have to take a step backwards in your training or start all over again because you poison your cue. Also, if you choose to continue training, be prepared for adolescence in a few months where she may forget everything you taught her for a little bit. It's normal and natural and the best advice is to work through it, but keep sessions short and simple until the pup comes out on the other side. Severity of adolescence depends on the dog.
I would not worry about the kibble; use it as a motivator and something that reinforces the work. Make training fun over time so she learns to enjoy it, even the stuff that isn't that fun for dogs, and eventually you should be getting her working happily without food when you have to. Keep sessions very short and very upbeat and very fun. I still use food with my competition dog and he is three. I don't carry it on my body anymore and amount of rewards vary depending on what we are doing. But he has learned to love work for the sake of work and the food is icing on the cake. Fetch may come later, she is just a baby puppy and sometimes it takes a while. I just got my six year old excited about the chuck-it last year.
Some suggestions would be: Obedience, rally, agility (foundations for now; no jumping for another year or so), nosework, tricks (often as a part of your foundation).