τοῦτ̓ is governed by ἐξηύχης᾿, not by τλῆναι, which interprets it. ἂν might go with τλῆναι (=“ὅτι τλαίης ἄν”), but is better taken, as its position suggests, with ἐξηύχης᾿. The sense of “ἂν ἐξηύχης᾿” warrants the use of “τλῆναι”, without “ἄν”, instead of “τλήσεσθαι”. See Appendix. μεῖναι (depending on “τλῆναι”) governs τἀμὰ πήματα, to ‘wait for’ them, i.e., to wait till they were better: cp. Aesch. fr. 35 “ἀγὼν γὰρ ἄνδρας οὐ μένει λελειμμένους.” ξυνωφελοῦντά μοι, helping to do me good, with dat. instead of the usual acc.; cp. Ant. 560“τοῖς θανοῦσιν ὠφελεῖν” (n.). It is possible, but less simple, to supply “αὐτά” (sc. “τὰ πήματα”) with “ξυνωφ.”, ‘helping me to assuage them.’