Complex sentence: She blames Piper for this since Piper lost the screwdriver that started the whole confrontation, although Piper is able to make it up to her by convincing Susan to reopen the running track so that Watson can run again.
Split into simpler sentences: She blames Piper for this since Piper lost the screwdriver that started the whole confrontation. Although Piper is able to make it up to her by convincing Susan to reopen the running track so that Watson can run again.