Answer:
Baldo followed the waig on the way home because his father ordered him to do so. This order was intended to test whether the girl would be able to live in the province.
Explanation:
The girl was a typical city girl who was used to all the comfort and practicality that the urban environment can provide. With that, the father had doubts if she would be able to live in the province which was a totally different environment and with less resources than the city, that is, the province would be a big change for the girl. To test her in this new environment, her father ordered Baldo to follow her on the way to Leon and Maria's house.
