Yes, if she is an owner of a business (e.g. the camp) and not of land, then she can transfer her interest to you and your brother by a bill of sale or contract. Be aware that if you get it for less than fair market value, there may be tax consequences, since to the degree you get her share for less than market value, it is a windfall to you and/or your brother; speak with a tax preparer to see what the effect may be.If she is on the deed of the underlying land, she'd need to do a quitclaim deed transfering her interest in the land to you.If she is on a lease for the land, if the lease states there are no assignments without the landlord's permission, she'd need the landlord's consent to be removed from the lease; if there is no restriction on assignment in the lease, she can simply assign her rights and obligations under the contrat to you and your brother.