What to do after your dog lost its friend

I was distraught after loosing one of our dog, Roxy.  So I knew my other dog Toot was having the same emotion or probably worst.  Roxy was her sister, playmate and someone she can identify with.  So, I wanted to find a way to help Toot through her grievance.  I decided to add a routine to her daily schedule.  We started walking in the morning for at least 30 minutes to anhour.  And I think because of this routine, it helps us both.  She's finally moping less and playing more.

Toot my Black and white Pittbull 

Always ready to go outside for a walk 

Toot in her favorite room, the porch