Bachteler had to learn to walk again and put her coaching career on hold until Burnley welcomed her back in July as their new women's team manager.
She is still not fully recovered and suffers with post-sepsis syndrome, which leads to dizzy spells and extreme fatigue.
During a pre-season friendly a few weeks ago, Bachteler became unwell.
"It was so hot with the sun facing the bench. I got up in the second half and it was like when you have too much wine, you get up and you're like, 'woah!'
"I was just so dizzy. I gave the instruction, talked to the team and then I went to the cafe on site and said to them: 'Can I sit in your freezer?'
"I just needed to calm down. Then I started crying because my nervous system is still recovering and it's just been really, really hard."
Bachteler praises Burnley's support throughout the process, saying that club doctors "saved her life" and have put her in touch with a respiratory specialist.
She has received supportive messages from players and has been able to delegate jobs to her coaching staff, who she describes as "phenomenal".
Her family have also supported her - but it has been mentally tough.
Bachteler recalls a day in May when her parents flew over from the US and she had to leave a restaurant because of extreme dizziness.
"We went for Sunday dinner and it was loud. I just got so dizzy and they could see it. As we were walking back, I was shaking and I didn't know where I was," she said.
"They started crying, both of them. I think it was even harder for them. I get emotional any time I talk about my family with this.
"When my wife was able to see me [in hospital], she just started crying because of the amount of weight I lost.
"I'm really athletic and I'm really fit, but then I wasn't able to walk. She had to hold me up going down the stairs."
Bachteler continues to have respiratory therapy to improve her lungs.
She still struggles with fatigue, mental fog, memory loss and trembles if she becomes too exhausted, as well as suffering from regular dizzy spells.
"I'm definitely in a good way though. I'm about 70 to 80% Jackie again and that's thanks to the club, the doctors here and the NHS - but it was close.
"If I had gone home that day when the emergency room tried to send me back, I wouldn't be sitting here today."

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