As the trier of fact, the trial court had the benefit of observing the witnesses and weighing their testimony, and thus it was in the best position to weigh the credibility of their testimony and determine the facts of the case. See Stanley v. Stanley (Sept. 17, 2001), Mahoning App. No. 99 CA 203; Maccabee v. Maccabee (June 29, 1999), Franklin App. No. 98AP-1213. {¶ 82} Within her first assignment of error, she also contends that the trial court's judgment is not supported by competent evidence because the court failed to follow the guardian ad litem's recommendation.

{¶ 32} Contrary to defendant's assertion, plaintiff's testimony alone is sufficient to meet the preponderance-of-the-evidence standard. Felton, 79 Ohio St.3d at 44, 679 N.E.2d 672; Stanley v. Stanley (Sept. 17, 2001), Mahoning App. No. 99 CA 203, 2001 WL 1128835. Plaintiff was not required to corroborate her testimony with other witnesses.