Sorry- it's a little big so the text could be read. This is how my drawing start out- I'm a huge sketcher, but also a very messy one so my apologies for that too. I just had a cousin die, and I didn't have the heart to finish them-but I decided I might as well at least upload these.
In the upper left Tanta is politely scolding Boomer for forgetting his duties or something like that. Boomer is a little afraid of her, but also a giant suck up to any authority.
Upper right is Tanta walking from her house to the sled team- greeting Togo and Fritz along the way. The boys may have seen her around town, and are very surprised to find that she's a lead dog. She's decided not to ask them why they are staring and just say "Mornin'.
Lower Left needs no explanation.
Lower right is probably after Tanta inquired Fritz on what his time on the Serum run was like, he might be bragging a little- but hey, the guy deserves it. Tanta is listening intently and is in quiet but total admiration. Though she never says how much she admires their work- she has no control over the flush of her cheeks.