Who told you that it is "bad" for her to be spotting a month later?
She needs to go back to her doctor at Planned Parenthood. They can do the sonogram there and they can tell you if the spotting is normal. It could just be her menstrual cycle restarting after pregnancy. It could also be any one of a number of other things.
If they only did the blood tests on Friday, this being Monday, it is a bit unrealistic to expect any results today. If you haven't heard anything by Wednesday, call and follow up.