to wonder

[syntaxianus]

Under ago in L&S:

To pursue in one's mind, to drive at, to revolve, to be occupied with, think upon, have in view, aim at (cf. agito, II. E., volvo and voluto): nescio quid mens mea majus agit, Ov. H. 12, 212: hoc variis mens ipsa modis agit, Val. Fl. 3, 392: agere fratri proditionem, Tac. H. 2, 26: de intrandā Britanniā, id. Agr. 13

Under voluto [-- a promising candidate!]

(a). To busy, occupy (of the mind): animum saepe tacitis cogitationibus, Liv. 9, 17, 2: in veteribus scriptis studiose et multum volutatum esse, Cic. de Or. 3, 10, 39; cf. id. Q. Fr. 2, 13, 4.—

(b). To turn over or revolve in the mind; to consider, weigh, ponder : rem in pectore, Plaut. Capt. 4, 2, 1: gladios in comisationem praeparatos volutabam in animo, Liv. 40, 13, 4: haec secum volutantem in animo, id. 42, 11, 5: hoc eum jam pridem volutare in animo, id. 28, 18, 11: haec in animo voluta, Sen. Ep. 24, 15; cf.: in pectore volutare, Lact. 7, 16, 4: ipse quid intra animum volutaverim ... omittam referre, Tac. A. 4, 40: nihil umquam nisi sempiternum et divinum animo volutare, Cic. Rep. 1, 17, 28: aliud atque aliud consilium animo, Curt. 5, 12, 10; Tac. H. 2, 49; Sen. Cons. Marc. 11, 5: aliquid mente, Lucr. 3, 240: tacitus mecum ipse voluto, Verg. E. 9, 37: inter seque, Ov. M. 1, 389: multa secum animo volutans, Liv. 40, 8, 5: haec secum volutans, id. 30, 14, 3; 26, 7, 3: secum corde, Verg. A. 4, 533: suo cum corde, id. ib. 6, 185: aliquid in secreto cum amicis,to considerdiscuss Liv. 34, 36, 4: consilia de Romano bello, id. 34, 60, 2: quibus suā sponte volutantibus res inter se repugnantes obtorpuerant animi, id. 32, 20, 2.—

 

[syntaxianus]

I agree with cinefactus and Serenus: some usages might be covered by nescio an = I know not whether, probably, perhaps:

constantiam dico? nescio an melius patientiam possim dicere, id. Lig. 9, 26:
Did I say steadfastness? I wonder whether I could better say long-suffering / patience.

sin illam alteram, nescio an amplius mihi negotii contrahatur, id. Cat. 4, 5, 9:
but if that second, I wonder whether more trouble would be put into motion for me

ingens eo die res et nescio an maxima illo bello gesta sit, Liv. 23, 16;
A huge engagment took place that day and I wonder whether it was the largest in that war.

So : "I wonder if she is at home now?" = nescio an illa domi nunc sit.