I am sooo sorry to hear about Delilah,was she microchipped? and I still hold out hope she will be returned to you
.
Congratulations on your new girl
she is a cute fluffy ball.
No she is not to old for her ears to come up.
you can just shave the ears down for now and wait about a week or two to see if they come up on their own.
If not just google taping yorkie ears and you should get a few hits
or wait
I am sure some of the experienced will come to your aid before too long.