She did make the promise to her when she made that awful visit to the Nott family home that if she needed anything she could be found at the Three Broomsticks. It must have been something serious to encourage the young pregnant witch to seek Hermione out. Feeling an odd sense of protectiveness, she gently pulled Rosalind inside the safety of her room. Once the door was closed, she coated it in thick protective wards. She didn't want any curious souls who might have seen her enter the establishment to get too close to listen at the keyhole.