            IN THE SUPREME COURT OF THE STATE OF DELAWARE

    LINDSEY NORDIN,1                              §
                                                  §   No. 361, 2019
           Petitioner Below,                      §
           Appellant,                             §   Court Below—Family Court
                                                  §   of the State of Delaware
           v.                                     §
                                                  §   File No. CK12-02450
    RICHARD OAKLEY,                               §   Petition No. 19-03026
                                                  §
           Respondent Below,                      §
           Appellee.                              §


                                Submitted: December 20, 2019
                                Decided: January 16, 2020

Before SEITZ, Chief Justice; VAUGHN, and TRAYNOR, Justices.

                                            ORDER

         After careful consideration of the parties’ briefs and the record on appeal, we

conclude that the judgment below should be affirmed on the basis of the Family

Court’s custody order docketed July 16, 2019. The Family Court order reflects that

the court carefully reviewed all of the factors set forth in 13 Del. C. § 722. The fact

that the appellant disagrees with the Family Court’s factual determinations is not a

basis for reversal. Factual findings will not be disturbed on appeal unless they are

clearly erroneous, and when the determination of facts turns on a question of the

credibility of the witnesses appearing before the trial court, we will not substitute


1
    The Court previously assigned pseudonyms to the parties pursuant to Supreme Court Rule 7(d).
our opinion for that of the trier of fact.2 The appellant’s briefs also assert facts that

were not presented to the Family Court in the first instance, including circumstances

that arose after the Family Court’s decision. This Court will not consider evidence

that was not presented to the trial court in the first instance.3 To the extent that the

appellant believes that new events warrant a modification of the custody and

visitation arrangement ordered by the court, she must file a procedurally proper

petition to modify custody in the Family Court and support her claims with

appropriate evidence.4

       NOW, THEREFORE, IT IS ORDERED that the judgment of the Family

Court is AFFIRMED.



                                                     BY THE COURT:

                                                     /s/ Collins J. Seitz, Jr.
                                                          Chief Justice




2
  Shimel v. Shimel, 2019 WL 2142066, at *2 (Del. May 14, 2019).
3
  See Price v. Boulden, 2014 WL 3566030, at *2 (Del. July 14, 2014) (“[T]his evidence was not
available to the Family Court in the first instance, is outside of the record on appeal, and cannot
properly be considered by this Court.”); Del. Elec. Coop., Inc. v. Duphily, 703 A.2d 1202, 1206
(Del. 1997) (“It is a basic tenet of appellate practice that an appellate court reviews only matters
considered in the first instance by a trial court.”).
4
  We note that the Family Court docket reflects that the appellant filed a petition for modification
of custody on August 27, 2019, which the Family Court dismissed on December 6, 2019, after the
petitioner failed to appear in court as scheduled.
                                                 2
