Sarah Forrester, who was in her 50s, was described as a “kind” and “considerate” after she was pronounced dead at an address in the Wiltshire town on Friday evening.
A statement from mental health charity The Kelly Foundation, where Ms Forrester worked, said everyone was “heartbroken at the sudden loss of our lovely Sarah”.
“She was completely committed to the charity and devoted to her two young children,” the charity said.
“Sarah was pivotal in the work that we do here at the Kelly Foundation and her loss is a hugely traumatic event, not just for us and her colleagues but more especially for her children and family.
“Sarah was an incredible person, kind, thoughtful, considerate, caring and funny and she embodied everything that we hope our charity is and can be.”
Kerry Marsh, Ms Forrester’s neighbour in Swindon and friend of seven years, told Sky News: “Sarah was a good friend of mine. She was a kind soul who would help anyone.
“She was a great mum and did so much with her children, and I was lucky enough to class her as a friend.”
Stuart Gould, a friend of Ms Forrester who saw her just a few hours before she was found dead, told Sky News: “I popped in to see her on Friday lunchtime to present her with a box of Maltesers as she has organised an event at the Pinetrees Community Centre for me.
“In my short time of knowing Sarah, she was a beautiful, enthusiastic woman who put herself before others. On the Friday afternoon in question she was talking to two other ladies and helping them. It’s so sad.”
Wiltshire Police said the 13-year-old girl arrested on suspicion of murder has been bailed while enquiries continue.
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There is no wider risk to the public, and officers are not looking for anyone else in connection with this, the force said in a statement.
Police have asked people not to speculate about the incident online as this could prejudice the case.
