I think you’re right to question the merge. These profiles seem to represent two very different women with the same maiden name.
Elizabeth Brooke was born in Burton, Westmorland according to her census returns, but census returns for “Betty” Granger say she was born in Lancaster, so I suspect she may have the wrong baptism and parents attached.
Her profile, which you linked to, is drowning in incomprehensible sources and really needs a gedcom expert with a UK Ancestry account to clean it up and uncover what’s there. I’m reluctant to add anything as that may make clean-up harder.