.!! The tomato are much smaller, but they move around much more. The only disadvantage to this method is, you could get an old frog. And.............watch the frog's weight very carefully, the first couple of months you own it. If it does not gain or maintain weight easily, your frog has a parasite problem.
Anyway.............in my exp., the "Asian bullfrog" (Microhylidae Kaloula Pulchra), is a great buy, though all are wild caught. I bought some about 8 months ago, and they were very small, and now they are over 2". Tough as nails, and so far............are not as loud as the horned frogs and the White's tree frogs I have. The Asian bullfrog is actually a toad, with very small eyes and mouth.............hence microhylidae. My male.............sounds like a belch, or burp when he calls...........and it is not offensive, as far as being loud. It is kind of like a ghostly moan..........the first time you hear it, you will wonder if it came from a frog! Not near as loud as my White's treefrog male, who honks and growls like a big bulldog. As for the social aspect.............I think they like a buddy in there with them, though they will do fine alone. I have my toads in a 10 gl., and they still have plenty of room, and they are probably 2/3 grown. As far as the water, they love to sit in it, as these are South-east Asia species, and love the wet and moisture. Change the water bowl every three days, and sometimes you might have to change it every day or 2, if they defecate in it.
but i'm sure she will come out for a walkabout at some point. Sounds like you are off to a good start. They do not need much room, and I use the potting soil and peat mix as well. If you use a hide, like a cut in half flower pot, or a curl of cork bark, you can use less substrate, and they will still have a secure hide. Or...........sometimes the toads/frogs will not dig as deep, when they have a good hide. It can depend on the temps., but I would feed the toad 2 times a week, crickets no longer than the width of her head, at most. Feed 8 to 10 at a time, and sprinkle a little calcium and D-3 maybe once a week, to prevent metabolic bone disease. The chubby frogs can grow very fast, so you could feed 3 times a week, just watch the frogs weight, as obesity will drastically shorten their life. And...........you could try waxworms as a treat; mine just go insane for them. Waxworms are high in fat, but this can be offset with a high quality protein gutload, such as chicken mash. And you can mist off the cage heavily, this brings my toads out of hiding every time. What size is your Toad? This can effect the feeding schedule as well.