Though keep in mind (and this fact's seldom if ever cited), Elsie was boosted by a Liberal split (the 1988 fed Grit candidate ran and did quite well as an independent in 1993). Also, the PC brand was still relatively strong in and of itself in the Maritimes, and there was a bit of a "Celtic fringe" isolation factor akin to that which sustained the Liberal brand in the UK's extremities through the post-WWII years. By comparison, whatever her municipal popularity, I doubt that a Dianne Watts running for the PCs in Surrey in 1993 would have succeeded; at best, she might have managed a quarter of the vote a la Kim Campbell.
However, remember that Surrey's a big place encompassing several federal and provincial ridings--and the south part which Watts represents also happens to be the whitest and most "removed" from the heart of the gang-violence et al problem; it's really more of a "Greater White Rock" constituency with a touch of Fraser Valley Bible Belt-ism around the edges. Thus if her support remains cushioned anywhere, it's here.
And that she still came close to losing isn't just due to Justinmania; the Grits have always had above-average "moderate retiree" strength in White Rock.