What have I done!!!4 weeks before B2B!!!

So this is tri related in a huge way and then not. I was running on Monday, heading out, whne I saw the most emmaciated stray dog(pit bull) i have ever seen even on those TV commercials. I past by, called my hubby to report. Told myself if she was there when I got back in 90 min then I would think about doing something. She was right there, too tired to move I guess. Hubby brought food and the next thing I know, we have her in our garage. Sweet sweet girl.
I have tried every rescue place in the state and no one will take this dog-"all full". My hubby has fallen in love. Thing is we have a 130# dog aggressive bullmastiff who is not happy. He is friendly with one black lab down the street so i know there is potential albiet small.
I am 4 weeks away from B2B and really don't need any distractions but my hubby has just fallen in love, she breaks both our hearts.

Have I just found a running buddy or a problem?
Cayenne