Popular Heather Diamond, who was in her 50s, died at the scene of the fire at Rossdowney Road on Sunday morning.
An investigation is continuing and the road remains closed as further inquiries are conducted, said police.
A PSNI spokesperson added: “officers would like to thank anyone affected by the road closure for their patience.”
Tributes were paid to Ms Diamond on Sunday who was described as “well-known and well-liked”.
Ms Diamond’s employers, the River Faughan Anglers Ltd, said she was known as “the face of the company” and her death had come as a shock.
“Heather has been our office manager for the past 16 seasons, working part-time in the office, and more recently at home.
“Always cheerful, she would greet those anglers as they came to renew their permits with a smile,” the company said in a statement.
“During this and last season, Heather had been working for us from home, probably more than the two days a week that we asked of her, she was embracing the change to the new online way of working whilst isolating for her own health.“Our thoughts and prayers are with Heather’s family and friends, in this darkest of days”.
In one social media post, Eglinton Community Hall, where Ms Diamond taught dance classes, said she was a “pleasure to be around”.
“She brightened up our days, nothing was too much bother for her,” it added.
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