In the morning, she went to her second match when she faced Dararat Asayut from Thailand.
World setter Ahlquist took home the first set with the numbers 11-7 after just over six minutes played.
The Swede was just as confident in the second set, which she won 11-5.
The Thai started set number three by going up in a 5-1 lead.
Ahlquist fought back to 10-10, but it was Asayut who reduced to 2-1 in the set after a 13-11 victory.
The fourth set was exciting and even but Anna-Carin Ahlquist was a bit sharper and won in the end with 11-9.
Overall 3-1 in sets (11-7, 11-5, 11-13, 11-9).
She is now ready for the quarterfinals after two victories in two matches.
MORE FROM PARALYMPICS: No final for Anna Beck in her debut
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There was no final for Anna Beck in her Paralympics debut.
Photo: Bildbyrån