This is the first appearance of Mallory Wells (Jessica Amlee) since she left for Europe with Jake. The last time Mallory was on the show was in 704 - The Penny Drops.
The baby photos seen near the 32 min mark are actual photos of Ty and Amy, previously seen on the wall in a corner of the loft next to their bed.
Mallory has grown into a pretty young woman and resembles Marilyn Monroe.