Weird Behaviors

Question
Recently added a feale Yorkie to our household back in November.  We also have a 3yr old Golden Retriever.  From the moment we got her home the two of them have been best friends, constantly playing with each other.  

About two weeks ago we brought her over to a friends house who also owns a male Yorkie.  The male Yorkie would not leave her alone and was constantly harassing her and also kept trying to mount her ( she is spayed ).  She seemed to be very upset and wanted nothing to do with him.

It seems like since this incident she has been acting very weird, she will no longer play with the Golden Retriver or is very aggressive with him.  

She will not leave me and my husband alone, she is constantly bring toys over to us, wants us to throw them, as soon as we throw them she runs after the toy but than starts sniffing around.  This is becoming really annoying since she does this for hours.

She is about 10 months old right now.  She also keeps going to the bathroom in the house and does not seem to care if we scold her.  

Thanks for any advice you can give.

Answer
It sounds like she is trying to be in charge-but you have to be persistent and not let her get away with things,and she doesn't chose when it's playtime YOU do,same with if she demands you to pet her,that is dominance as well

Another thing to look into is getting her into obedience classes,as they will out her problems and will find ways to help you-call around and talk to different ones and pick the one you like