I had a freaky bug a while ago. Please help.

I was using a person who had changed parents with the Insim many times, had been edited with the Insim an unbelievable ammount of times, and had been edited to have a crush on someone while she was a child. I was wondering, does any of this affect how a sim travels?
Here's what went wrong: I had Kouta (from another lot) become selectable so that he and Lucy could go on an Outing. Lucy drove them to the lot, and Kouta suddenly wanted to go order a Taxi. I canceled the action a bunch of times, then commanded him to go elsewhere. I may have edited their ages on the community lot, too. I'm not sure.
I used the Summoner to bring another sim from Kouta's lot. Yuka kept trying to use a taxi, too. Then when I wasn't paying attention, the idiot gets into a Taxi and makes Kouta get into one. Because the family I was playing was Lucy's family, the two idiots messed up her family. When I had Lucy drive off, the Taxi moved too. I ended up getting to Kouta's house instead of Lucy's. Then, I couldn't have Kouta and Yuka interact with each other. The only way for Yuka to get into the house was to be greeted like a guest, for some reason!
Is my game screwed up? Does this happen often to anyone? Sorry the post was so long. I wanted to get every detail so someone could tell me if I made a mistake.