Brief Answer:
Less likely but definitely not totally safe.

Detailed Answer:
HI

Thanks for posting your query.
Apologies for delayed response.

Well since she has taken full course of medication , there is high probability that there shall not occur any recurrence. Now let me introduce you to two terminologies here .

Recurrence can be due to relapse or re infection.

Relapse : It means the recurrence has happened due to the same bacteria which had caused TB in your mother . This indicates either a partial response to previous treatment or inadequate duration of treatment.

The risk of relapse in your mother's case is very negligible.

Re-Infection : This is a repeat TB infection due to exposure to TB bacteria from an infected patient. This risk of this happening is as good as that for any person.

So in my opinion , the risk is very less but can't tell that she is totally safe from recurrence.

Hope this information was useful to you.
Any clarifications feel free to ask.

Regards.

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