Review the item:
Cindy's mumbling often gets her in trouble just
the other day, her stylist misunderstood Cindy's instructions and dyed
her hair blue after Cindy asked him to trim the ends.
A comma splice occurs when two complete sentences are incorrectly joined with just a comma. In the example above, no such comma exists. Cindy's mumbling often gets her in trouble is one sentence. Just the other day, her stylist misunderstood ... begins the second sentence.
Because only empty space exists between the two, you should call this error a fused sentence.
To fix the problem above, you could put a period after trouble and begin just with a capital J.