Binga will chill a lot in a corner of the tank or in a nook or cranny. Timmy will either be somewhere else or he will be chilling with her as well. Sometimes Binga will move away when she joins him. I've heard a few times where they have gotten scared (or accidentally tried to eat the other) and gone off in opposite directions, but no direct chasing. She seems to pay him no mind most of the time. She does also like to hang out in the front of the tank, where I come by.....she seems to know me/my voice or at least that is where her food shows up (whereas he is in his own world where I don't exist.)
Sounds like the best option if I am worried is to by another tank + heater, but they are probably fine otherwise. I just hope this doesn't go on for months, not sure what there normal mating cycle is. I live in cold Wisconsin but their temperature is 77-79. It is also interesting that they were/are (we will see tomorrow if it continues) on an every other day schedule, overlapping with food (because I didn't feed them the day after they mated since they ate all the eggs.) Thanks for the suggestions and I'd appreciate anymore....especially if I could get some numbers (I'm a scientist and I really like them.)