Aussie Ears

[WELOVESPUPPIES]

I don't know if something along this manner can be done for this breed but another PTer has Rotties that have had their ears taped to hold them down properly, this sounds more appropriate than ummmm...chewed gum. She has two posts in this thread with pictures, it is the second one I believe.
Taped ears
If I was your SIL I would just love the pup for who she is, not whether her ears are to standard. That is only a concern for showing or breeding. If she feels she paid to much for a poorly bred dog, well I think that is something that she would have had to have researched before she bought her...

[Taz_Zoee]

That is so weird. I just PM'd Jessika yesterday asking her about Charlie's ears. I swear I had not seen this thread. I am seeing it now for the first time.

Zoee's ears are like the first pic in the link Jessika posted. And all other Aussie's I've seen at the park and around have had these ears. That's why I was curious about Charlie's. But I think they are so cute when they stand up. And one standing up and the other down would be adorable. I think your SIL should not worry about it. It adds character.