2)Well first off i want to say, do you know how to stock? do you know what overstocking is? There is a general rule about overstocking, 1 inch of fish (at adult size) per gallon. that means you can only have 10 inches of fish, and with 2 dwarf african frogs, you cant fit much more in there. I dont know much more about that, so post in tropical chit chat for more on if your overstocked. As it is, i'd say to return the female guppy since she wont go good with the betta.
just wanted to make sure you saw that.
oh, and you were told wrong about cycling, as rdd said, it will change when you have fish in there, thats what cycling is. So dont just leave it now, keep testing it if possible, and do water changes alot (i do them daily in situations such as yours, like when my parents didnt cycle, waited a day and threw in a bunch of fish. It took sooo long to get healthy, and alot of the fish died anyway.)
next time, just so you know, the tank should either have 1 or two hardy fish (i find that cruel though

) then for a few weeks (Sometimes longer, i dont quite know) do frequent water changes until the tank is testing normal (VERY unlikely to happen in less than a week)
another way, which i prefer, is fishless cycling. If you search on that here, you can learn more about it, it is basically when you add bacteria cultures (That are necesary to keep your tank stable) and fish at the same time, and its done for you. Sometimes this doesnt work, if the pet shop doesnt store it correctly (should be in a freezer of sorts)
So yeah, next time youll know
EDIT: and i still stand by removing the guppy. people have had livebearers of all sorts live with bettas for a while, and then one day WHAM you wake up to find both injured, perhaps one dead... your already pushing limits with ADF, an with babies, and how fast guppies reproduce? I think it best to just return that one guppy and save yourself the trouble of not only needing more, but then having them breed and breed and breed until you can t take it anymore (trust me, my neighbors ahd guppies, ended up with 3 10 gallons, 2 55s, and then they got annoyed with them and gave up altogether.)