Unless you keep them completely separated from each other, you run a huge risk of an accident between the dogs and possible you and /or other family members. Is it possible to board Heidi while you find a solution (shelter or a new home). Would there be anyone on this forum up to this task of giving Heidi what she needs?
Deja, GSD, sable WL, female, born 11 / 2013
Cam, Rough Collie, sable, male, born 8/2015