Just not right away. Wait a month, or in these weirdo's case, a couple months 1st. I bet they were not this upset when their parents kicked it.
Yes get another pet immediately, as soon as you can find the right one. It is amazing how much it soothes your grief. I had to wait about 5 weeks until the pup was 8 weeks old so she could be shipped to me but I got a full sister to the 1 1/2 year old that had died. Some of us get so attached that we become despondent and getting another one soon is the answer not suicide but there may have been other things going on with this couple.