Can I title my house into my sisters name, but still keep tax benefits and mortgage interest deduction? I would still live in the house and pay the mortgage and taxes.

No, once you no longer own the house, you are now a renter.

And I am sure your mortgage company will not like you giving your house to someone else while they have a mortgage on it.

You can add her name with your name and should OK, but if you take your name off, you are not paying a mortgage on your house any longer but paying a mortgage on your sisters house, and the insurance would go up since you are no longer the owner, you would not get a homestead exemption in your property tax ( if you are)
And a lot of other small changes also.