The entry in the Grüningen familienbucher for your Heller family, is as per your tree on Ancestry.
It states:
Johann Peter Heller - born May 1654, died 11 Jun 1730 - "ohne herkunftsangabe" meaning "without indication of origin"
married: 7 Apr 1681
Wife: Catharina Marsteller - born 10 Apr 1658, died 10 Mar 1732
Children:
1. Catharina Heller - born 14 Sept 1684
2. Johannes Heller - born 8 May 1690, died 27 Oct 1762
3. Gertraud Heller - born 1693, died 4 Apr 1771
4. Johann Zacharias Heller - born 6 Mar 1696, died 7 Dec 1782
Nachtrag: meaning "addendum" or "supplement"
5.
Elisabetha Heller - born 1687, died 30 May 1747
6. Anna Maria Heller - born 1682, died 21 Mar 1759
I can only imagine that the "added" daughters, including your Elisabetha, do not feature in the baptisms, but named Johann Peter Heller & Catharina Marsteller as their parents at the time of their death or marriage??
I descend from a Heller family in Grüningen, but a different line, so perhaps our families link there as well

I also descend from your Metter and Marsteller families.......I sometimes think I am related to everyone in Grüningen one way or another

Catharina Marsteller's family is below, it is the first Marsteller family in the book. You will note that there isn't a date for their marriage in the book, but I see you have a date in your tree.
Johann Wilhelm Marsteller - born 1626, died 6 May 1702 - "ohne herkunftsangabe" meaning "without indication of origin"
Wife: Maria - born 1631, died 14 Mar 1712 - "ohne herkunftsangabe" meaning "without indication of origin"
Children:
1. Johann Zacharias Marsteller - born 7 Aug 1653, died 9 Jan 1726
(my ancestor)2. Johann Peter Marsteller - born 23 Sept 1655
3. Anna Catharina Marsteller - born 10 Apr 1658, died 10 Mar 1732
(your ancestor)4. Johann Jacob Marsteller - born 29 Jan 1660, died 13 Oct 1739
(also my ancestor)5. Barbara Catharina Marsteller - born 5 Jun 1664, died 22 Sept 1738
6. Johann Balthasar Marsteller - born 31 Jan 1669, died 19 Aug 1750
Your Metter family is also as per your Ancestry tree:
Balthasar Metter (also Meder) - died 22 Feb 1675
wife: Anna Margretha - "keine angaben" meaning "no information provided"
Children:
1.
Elisabeth Metter - born 27 Feb 1648 (NB - her death is not recorded in this family entry)
2. Johann Adan Metter - born 15 Sept 1650, died 19 Mar 1706
(my ancestor)3. Catharina Metter - born 7 Aug 1653
4. Johann Cloß Metter - born 20 Mar 1658, died 12 Nov 1709
5. Zacharias Metter - born 27 Jan 1661
6. Johann Wilhelm Metter - born 24 Aug 1662
7. Johannes Metter - born 16 Feb 1668, died 15 Apr 1731
8. Anna Margarethe Metter - born 1655, died 18 Apr 1717 (I am not sure why she is listed last)
There is also a note stating:
"Vorseitig genannter Balthasar Meder war Consul (= Bürgermeister) 1651 laut Glockeninschrift Grüningen"
which translates to:
Balthasar Meder mentioned above was consul (= mayor) 1651 according to the bell inscription Grüningen
I hope that helps verify the information in your family tree

Jenny