Lisa Lax-Harding, 45, of Heeley, said she fears she may never again see four-year-old Finlay, who has mosaic Edwards’ syndrome and is vulnerable to catching the virus, if she catches coronavirus.
Mrs Lax-Harding released an emotional video of her reunion with Finlay after her first four weeks spent away from him while working at the Steps Rehabilitation centre in Millhouses, where she is facilities manager.
Along with her wife, Abbie, she made the decision to continue working when they received a letter from the NHS about shielding Finlay. The mother-of-four said she felt that she could not turn her back on patients, but knew that she could not return home while she was working.
She said: “Leaving him and knowing I could catch the virus and never come back, that’s the heartache.
“The morning I left, I went to kiss him in the bedroom, I was crying, my wife was crying, she said, ‘shall I wake him up?’, I said, ‘no, if you wake him up I can’t go’.”
She continued: “It was awful. It was absolutely horrid. The first day I moved out, I went to work, I cried quite a lot.
“Work were so, so supportive but the realisation that I might never come home if I caught the virus was horrific. I was awake at 3am thinking ‘what if I never see my little boy again?’.”
Mrs Lax-Harding, whose 18-year-old daughter Ellie also works at Steps Rehabilitation, said the workplace has a family environment.
She said: “When you work with clients together for a long time, you want to protect them too and keep them safe. I just felt like I couldn’t turn my back on those either.”
Mrs Lax-Harding said she had never spent a night away from Finlay before the coronavirus pandemic, despite frequent stays in hospitals and at a respite centre, and said the virus had "turned his world upside-down".
She worked for three weeks and then spent 10 days in isolation before returning to her home in Heeley last week and said she was "ecstatic" to be home.
She said: "Missing Finlay is the worst feeling I can have.
"The day I came home, my wife wasn't expecting me and she wasn't in the room. Finlay was just sat on the floor playing, I think he spent a full hour literally just holding me."
She added: "I thought he was going to forget me, what if he doesn't remember who I am. We're so close, we go everywhere together. I didn't give birth to him but we have a really unbreakable bond."
Mrs Lax-Harding will return to work next week and said she does not see the situation changing "any time soon".
She said: "If I said I'm not scared, I'd be lying to you. I'm so scared of catching it. If I told you I wasn't dreading leaving next week, I could cry because I don't want to leave Finlay, but if everyone adopted that attitude, nobody would get looked after."
She added: "But we have to put our feelings and how we feel to one side and prioritise Finlay, he has to be at the top of that."