I eventually decided to rename all the chapters "Magical Mastersons Chapter XXX" because it's a lot easier than trying to remember things like "Sisters Forever" and "Artemis and Leo" :D :D
There are three new chapters up on the blog, that I'll link to here. The first is from Apollo's POV, the second is done in the third person and the third is from Erytheia's POV.
Magical Mastersons Chapter Eighteen: Living Up to my Namesake Magical Mastersons Chapter Nineteen: A Whirlwind Romance Magical Mastersons Chapter Twenty: They're Growing Up 
