It was then found that she had imported small amounts of the dangerous drug on several occasions from January last year until her actions were uncovered.
She told Customs that she had arranged through a friend known only as 'King' to have the drugs sent to her in Taranaki and Christchurch, with the amounts of meth varying between 2 and 4 grams.
Today at Christchurch District Court she admitted the representative charge, after Crown prosecutor Kathy Basire, appearing for Customs, withdrew an earlier charge.
Jacobs is married with a teenage son, and works at an early childhood learning centre for pre-school children in Christchurch which cannot be named for legal reasons.
She will be sentenced on November 20.
Judge David Holderness called for a pre-sentence report as well as a report which will assess her suitability to complete a sentence of home detention.
Jacobs refused to comment outside court.
The early learning centre in Christchurch confirmed that she had resigned shortly after her arrest from her job, which she'd held for about a month.
A spokeswoman said they were shocked by the "nightmare" revelations and had moved to reassure parents that their kids were never in any harm.
The centre has also taken public health advice, and been informed that no children would have been exposed to any adverse effects from being close to a suspected methamphetamine user.
Jacobs had undergone a police check before she was hired.
"She was very new to us, but we had no idea. It was a total shock,'' said the centre's spokeswoman.
"We had one or two parents talk to us about it and reassured them ... but now that she's lost name suppression, we'll be in a position to talk to parents and reassure them over the safety of their kids.''
