How do I house break a puppy fast?

I have a small puppy that is 21/2 months old. She is half chihuahua, a 1/4 catahoula cow dog and 1/8 each black lab and er spanial, she seems very intellegent. I have a 2 yr old wolf hybred as well and 2cats she gets along with fine. My kids love her. I love her. Because she is a puppy we leave her in the bathroom while we are gone,( which isn't much someone is home most of the time)that is also where her food and water are. She doesn't potty in there which is great but she will tinkle just a little when my husband comes home ( he is a truck driver and generally home only on the wkends) and speaks to her, he is sweet to her. She loves him but he wasn't thrilled about my getting her.She goes when we take her outside. with only occional mistakes on the floor (usally when we arn't paying enough attention. My husband is looking for an excuse to force me not to keep her. Is there a faster way to housebreak? How do I get her to stop the summisive pee? Any ideas?