Honestly, Barnard seems like the best fit.
If you are going to NYC, perhaps look into Sarah Lawrence. They are reputed to have a very strong dance program.
You could
Day One: Fly into Boston, rent a car and drive to Wellesley for a visit, then continue out to the MHC/Smith area and stay overnight. Maybe drive around the campuses a bit if you have time before dark.
Day Two: Split between MHC and Smith. Stay there again so as not to be rushed.
Day Three: Drive to NYC, stopping at Vassar en route, and possibly add a quick visit to Sarah Lawrence if you have time. Walk around the Barnard/Columbia area in the evening and have dinner. (My S lived in I-House for a year, and it’s a great place. If you can stay there for a night or two, it would be a great idea. You can also actually park on the street in the neighborhood around it, which can be tough in NYC.) See a show (may have to skip Sarah Lawrence and have dinner in midtown instead).
Day Four: Visit Barnard (and check out Columbia). Leave in the late afternoon and drive to Princeton area. Stay overninght, taking time to walk/drive around campus as time and light permits.
Day Five: Visit Princeton in the morning, have lunch in the student union/center (can’t remember what it is called) drive to Bryn Mawr/Haverford area; again, take a spin around the campuses as daylight permits. Stay overnight
Day Six: Visit Bryn Mawr and at least check out Haverford and Swarthmore.
Day Seven: Visit Philadelphia, return car, and fly home.
BTW, don’t forget that MHC and Smith are in the 5 college exchange with U Mass Amherst, which may have more offerings in academics concerning deafness than liberal arts colleges normally do. At Wellesley, there have to be opportunities nearby in Boston.